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Colored diff for /texts/archimedes/xml/Attic/monte_mecha_01_la_1577.xml between version 1.37 and 1.38

version 1.37, 2003/07/02 20:27:26

version 1.38, 2003/07/07 17:18:48

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<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0"?><!DOCTYPE archimedes SYSTEM "../dtd/archimedes.dtd" >

<info>

<author>Monte, Guidobaldo del</author>

<author>Monte, Guidobaldo del</author><title>Mechanicorum Liber</title> <date>1577</date><place>Pisauri</place><translator></translator><lang>LA</lang><cvs_file>monte_mecha_02_la_1577</cvs_file><cvs_version>2635.10</cvs_version><locator>036.xml</locator></info>

<title>Mechanicorum Liber</title>

<place>Pisauri</place>

<cvs_file>monte_mecha_02_la_1577</cvs_file>

<cvs_version>2635.10</cvs_version>

</info>

<text>

<front>

<s id="id.2.1.1.1.2.1.0">GVIDIVBALDI <lb/>E MARCHIONIBVS <lb/>MONTIS <lb/>MECHANICORVM <lb/>LIBER. </s>

</figure>

<s id="id.2.1.1.1.6.1.0">PISAVRI <lb/>Apud Hieronymum Concordiam. </s>

<lb/>

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<lb/>

<s id="id.2.1.1.1.10.1.0">Cum Licentia Superiorum. </s>

<s id="id.2.1.1.3.1.1.0">PRAESENTI OPERE <lb/>CONTENTA. </s>

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<s id="id.2.1.1.9.1.1.0">De Cochlea. </s>

<s id="id.2.1.1.11.1.1.0">AD FRANCISCVM <lb/>MARIAM II <lb/>VRBINATVM <lb/>AMPLISSIMVM DVCEM <lb/>GVIDIVBALDI <lb/>E MARCHIONIBVS <lb/>MONTIS </s>

<s id="id.2.1.1.11.3.1.0">PRAEFATIO. </s>

<s id="id.2.1.1.12.1.1.0">DVAE res (AMPLISSIME PRIN<lb/>CEPS) quæ ad conciliandas homi<lb/>nibus facultates, vtilitas nempè, & <lb/>nobilitas, plurimùm valere conſue<lb/>uerunt. </s>

<s id="id.2.1.1.12.1.1.0">DVAE res (AMPLISSIME PRIN<lb/>CEPS) quæ ad conciliandas homi<lb/>nibus facultates, vtilitas nempè, & <lb/>nobilitas, plurimùm valere con&longs;ue<lb/>uerunt. </s>

<s id="id.2.1.1.12.1.2.0">illæ ad exornandam mecha<lb/>nicam facultatem, & eam præ om<lb/>nibus alijs appetibilem reddendam conſpiraſſe <lb/>mihi videntur: nam ſi nobilitatem (quod pleriq; <lb/>modò faciunt) ortu ipſo metimur, occurret hinc <lb/>Geometria, illinc verò Phiſica; quorum gemina<lb/>to complexu nobiliſſima artium prodit mechani<lb/>ca. </s>

<s id="id.2.1.1.12.1.2.0">illæ ad exornandam mecha<lb/>nicam facultatem, & eam præ om<lb/>nibus alijs appetibilem reddendam con&longs;pira&longs;&longs;e <lb/>mihi videntur: nam &longs;i nobilitatem (quod pleriq; <lb/>modò faciunt) ortu ip&longs;o metimur, occurret hinc <lb/>Geometria, illinc verò Phi&longs;ica; quorum gemina<lb/>to complexu nobili&longs;&longs;ima artium prodit mechani<lb/>ca. </s>

<s id="id.2.1.1.12.1.3.0">ſi enim nobilitatem magis, tùm ſtratæ materiæ, <lb/>tùm argumentorum neceſſitati (quod Ariſtote<lb/>les fatetur aliquandò) relatam volumus, omnium <lb/>procul dubiò nobiliſſimam perſpiciemus. </s>

<s id="id.2.1.1.12.1.3.0">&longs;i enim nobilitatem magis, tùm &longs;tratæ materiæ, <lb/>tùm argumentorum nece&longs;&longs;itati (quod Ari&longs;tote<lb/>les fatetur aliquandò) relatam volumus, omnium <lb/>procul dubiò nobili&longs;&longs;imam per&longs;piciemus. </s>

<s id="id.2.1.1.12.1.4.0">quæ <pb xlink:href="036/01/004.jpg" xlink:type="simple"/>quidem non ſolum geometriam (vt Pappus teſta<lb/>tur) abſoluit, & perficit; verùm etiam & phiſica<lb/>rum rerum imperium habet: quandoquidem <lb/>quodcunq; Fabris, Architectis, Baiulis, Agricolis, <lb/>Nautis, & quàm plurimis alijs (repugnantibus na<lb/>turæ legibus) opitulatur; id omne mechanicum <lb/>eſt imperium. </s>

<s id="id.2.1.1.12.1.4.0">quæ <pb xlink:href="036/01/004.jpg"/>quidem non &longs;olum geometriam (vt Pappus te&longs;ta<lb/>tur) ab&longs;oluit, & perficit; verùm etiam & phi&longs;ica<lb/>rum rerum imperium habet: quandoquidem <lb/>quodcunq; Fabris, Architectis, Baiulis, Agricolis, <lb/>Nautis, & quàm plurimis alijs (repugnantibus na<lb/>turæ legibus) opitulatur; id omne mechanicum <lb/>e&longs;t imperium. </s>

<s id="id.2.1.1.12.1.5.0">quippè quod aduerſus naturam <lb/>vel eiuſdem emulata leges exercet; ſumma id <lb/>certè admiratione dignum; veriſſimum tamen, <lb/>& à quocunque liberaliter admiſſum, qui pri<lb/>us ab Ariſtotele didicerit, omnia mechanica, <lb/>tùm problemata, tùm theoremata ad rotundam <lb/>machinam reduci, atq; ideo illo niti principio, <lb/>

<s id="id.2.1.1.12.1.5.0">quippè quod aduer&longs;us naturam <lb/>vel eiu&longs;dem emulata leges exercet; &longs;umma id <lb/>certè admiratione dignum; veri&longs;&longs;imum tamen, <lb/>& à quocunque liberaliter admi&longs;&longs;um, qui pri<lb/>us ab Ari&longs;totele didicerit, omnia mechanica, <lb/>tùm problemata, tùm theoremata ad rotundam <lb/>machinam reduci, atq; ideo illo niti principio, <lb/><expan abbr="nõ">non</expan> minus &longs;en&longs;ui, quàm rationi noto. </s>

<expan abbr="nõ">non</expan> minus ſenſui, quàm rationi noto. </s>

<s id="id.2.1.1.12.1.6.0">Rotunda ma<lb/>china e&longs;t mouenti&longs;&longs;ima, & quò maior, eò mouen<lb/>tior. </s>

<s id="id.2.1.1.12.1.6.0">Rotunda ma<lb/>china eſt mouentiſſima, & quò maior, eò mouen<lb/>tior. </s>

<s id="id.2.1.1.12.1.7.0">Verùm huic nobilitati adnexa e&longs;t &longs;umma re <lb/>rum ad vitam pertinentium vtilitas, quæ propte<lb/>rea omnes alias à diuer&longs;is artibus propagatas an<lb/>tecellit; quòd aliæ facultates po&longs;t mundi gene&longs;im <lb/>longa temporis intercapedine &longs;uos explicarunt <lb/>v&longs;us; i&longs;ta verò & in ip&longs;is mundi primordijs ita fuit <lb/>hominibus nece&longs;&longs;aria, vt ea &longs;ublata Sol de mun<lb/>do &longs;ublatus videretur. </s>

<s id="id.2.1.1.12.1.7.0">Verùm huic nobilitati adnexa eſt ſumma re <lb/>rum ad vitam pertinentium vtilitas, quæ propte<lb/>rea omnes alias à diuerſis artibus propagatas an<lb/>tecellit; quòd aliæ facultates poſt mundi geneſim <lb/>longa temporis intercapedine ſuos explicarunt <lb/>vſus; iſta verò & in ipſis mundi primordijs ita fuit <lb/>hominibus neceſſaria, vt ea ſublata Sol de mun<lb/>do ſublatus videretur. </s>

<s id="id.2.1.1.12.1.8.0">nam quacunq; nece&longs;&longs;ita<lb/>te Adæ vita degeretur; & quamuis etiam ca&longs;is <lb/>contectis &longs;tramine, & angu&longs;tis tugurijs, ac gurgu<lb/>&longs;tijs c&oelig;li de fenderet iniurias; &longs;ic & in corporis ve<lb/>&longs;titu, licet ip&longs;e nihil aliud &longs;pectaret, ni&longs;i vt imbres, <pb xlink:href="036/01/005.jpg"/>vt niues, vt ventos; vt Solem, vt frigus arceret; <lb/>quodcunque tamen id fuit, omne mechanicum <lb/>fuit. </s>

<s id="id.2.1.1.12.1.8.0">nam quacunq; neceſſita<lb/>te Adæ vita degeretur; & quamuis etiam caſis <lb/>contectis ſtramine, & anguſtis tugurijs, ac gurgu<lb/>ſtijs cœli de fenderet iniurias; ſic & in corporis ve<lb/>ſtitu, licet ipſe nihil aliud ſpectaret, niſi vt imbres, <pb xlink:href="036/01/005.jpg" xlink:type="simple"/>vt niues, vt ventos; vt Solem, vt frigus arceret; <lb/>quodcunque tamen id fuit, omne mechanicum <lb/>fuit. </s>

<s id="id.2.1.1.12.1.9.0">neq; tamen huic facultati contingit, quod <lb/>ventis &longs;olet, qui cùm vndè oriuntur, ibi vehe<lb/>menti&longs;&longs;imi &longs;int, ad longinqua tamen fracti, de<lb/>bilitatiquè perueniunt: &longs;ed quod magnis flumini<lb/>bus crebriu&longs; accidit, quæ cùm in ip&longs;o ortu parua <lb/>&longs;int, perpetuò tamen aucta, eò ampliori ferun<lb/>tur alueo, quò à fontibus &longs;uis longius rece&longs;&longs;e<lb/>runt. </s>

<s id="id.2.1.1.12.1.9.0">neq; tamen huic facultati contingit, quod <lb/>ventis ſolet, qui cùm vndè oriuntur, ibi vehe<lb/>mentiſſimi ſint, ad longinqua tamen fracti, de<lb/>bilitatiquè perueniunt: ſed quod magnis flumini<lb/>bus crebriuſ accidit, quæ cùm in ipſo ortu parua <lb/>ſint, perpetuò tamen aucta, eò ampliori ferun<lb/>tur alueo, quò à fontibus ſuis longius receſſe<lb/>runt. </s>

<s id="id.2.1.1.12.1.10.0">Nam & temporis progre&longs;&longs;u mechanica fa <lb/>cultas &longs;ub iugo æquum arationis laborem di<lb/>&longs;pen&longs;are, atque aratrum agris circumagere cæ<lb/>pit. </s>

<s id="id.2.1.1.12.1.10.0">Nam & temporis progreſſu mechanica fa <lb/>cultas ſub iugo æquum arationis laborem di<lb/>ſpenſare, atque aratrum agris circumagere cæ<lb/>pit. </s>

<s id="id.2.1.1.12.1.11.0">deinceps bigis, & quadrigis docuit comea<lb/>tus, merces, onera quælibet vehere, è finibus <lb/>no&longs;tri&longs; ad finitimos populos exportare, & ex il<lb/>lis contra importare ad nos. </s>

<s id="id.2.1.1.12.1.11.0">deinceps bigis, & quadrigis docuit comea<lb/>tus, merces, onera quælibet vehere, è finibus <lb/>noſtriſ ad finitimos populos exportare, & ex il<lb/>lis contra importare ad nos. </s>

<s id="id.2.1.1.12.1.12.0">præterea cùm iam <lb/>res non tantùm nece&longs;&longs;itate, verùm etiam orna<lb/>tu, & commoditate metirentur, mechanicæ <lb/>fuit &longs;ubtilitatis, quòd nauigia remo impellere<lb/>mus; quòd gubernaculo exiguo in extrema pup<lb/>pi collocato ingentes triremium moles inflecte<lb/>remus; quòd vnius &longs;æpè manu pro multis fabro<lb/>rum manibus modò pondera lapidum, & tra<lb/>bium Fabris, & Architectis &longs;ubleuaremus; mo<lb/>dò tollenonis &longs;pecie aquas è puteis olitoribus e<lb/>xhauriremus. </s>

<s id="id.2.1.1.12.1.12.0">præterea cùm iam <lb/>res non tantùm neceſſitate, verùm etiam orna<lb/>tu, & commoditate metirentur, mechanicæ <lb/>fuit ſubtilitatis, quòd nauigia remo impellere<lb/>mus; quòd gubernaculo exiguo in extrema pup<lb/>pi collocato ingentes triremium moles inflecte<lb/>remus; quòd vnius ſæpè manu pro multis fabro<lb/>rum manibus modò pondera lapidum, & tra<lb/>bium Fabris, & Architectis ſubleuaremus; mo<lb/>dò tollenonis ſpecie aquas è puteis olitoribus e<lb/>xhauriremus. </s>

<s id="id.2.1.1.12.1.13.0">hinc etiam è liquidorum prælis vi<lb/>na, olea, vnguenta expre&longs;&longs;a, & quicquid liquo<pb xlink:href="036/01/006.jpg"/>ris habent, per&longs;oluere domino compul&longs;a. </s>

<s id="id.2.1.1.12.1.13.0">hinc etiam è liquidorum prælis vi<lb/>na, olea, vnguenta expreſſa, & quicquid liquo<pb xlink:href="036/01/006.jpg" xlink:type="simple"/>ris habent, perſoluere domino compulſa. </s>

<s id="id.2.1.1.12.1.14.0">hinc <lb/>magnas <expan abbr="arbor&utilde;">arborum</expan>, & marmorum moles duobus in <lb/>contrarias partes <expan abbr="di&longs;trah&etilde;tibus">di&longs;trahentibus</expan> vectibus diremp<lb/>&longs;imus; hinc militiæ in aggeribus extruendis, in <lb/>con&longs;erenda manu, in opugnando, propugnan<lb/>doq; loca infinitæ ferè redundarunt vtilitates; <lb/>hinc demum Lignatores, Lapicidæ, Marmorarij <lb/>Vinitores, Olearij, Vnguentarij, Ferrarij, Auri<lb/>fices, Metallici, Chirurgi, Ton&longs;ores, Pi&longs;tores, Sar<lb/>tores, omnes deniq; opifices beneficiarij, tot, tan<lb/>taq; vitæ humanæ &longs;uppeditarunt commoda. </s>

<s id="id.2.1.1.12.1.14.0">hinc <lb/>magnas <expan abbr="arborũ">arborum</expan>, & marmorum moles duobus in <lb/>contrarias partes <expan abbr="diſtrahẽtibus">diſtrahentibus</expan> vectibus diremp<lb/>ſimus; hinc militiæ in aggeribus extruendis, in <lb/>conſerenda manu, in opugnando, propugnan<lb/>doq; loca infinitæ ferè redundarunt vtilitates; <lb/>hinc demum Lignatores, Lapicidæ, Marmorarij <lb/>Vinitores, Olearij, Vnguentarij, Ferrarij, Auri<lb/>fices, Metallici, Chirurgi, Tonſores, Piſtores, Sar<lb/>tores, omnes deniq; opifices beneficiarij, tot, tan<lb/>taq; vitæ humanæ ſuppeditarunt commoda. </s>

<s id="id.2.1.1.12.1.15.0">Eant <lb/>nunc noui logodedali quidam mechanicorum <lb/>contemptores, perfricent frontem, &longs;i quam ha<lb/>bent, & ignobilitatem, atquè inutilitatem fal&longs;ò <lb/>criminari de&longs;inant: quòd &longs;i & adhuc id minimè <lb/>velint, eos quæ&longs;o in in&longs;citia &longs;ua relinquamus: <lb/>Ari&longs;totelemquè potius philo&longs;ophorum cory<lb/>phæum imitemur, cuius mechanici amoris ardo<lb/>rem acuti&longs;&longs;imæ illæ mechanicæ quæ&longs;tiones po&longs;te <lb/>ris traditæ &longs;atis declarant: qua quidem laude <lb/>Platonem magnificè &longs;uperauit; qui (vt te&longs;tatur <lb/>Plutarcus) Architam, & Eudoxum mechanicæ <lb/>vtilitatem impen&longs;ius colentes ab in&longs;tituto deter<lb/>ruit; quòd nobili&longs;&longs;imam philo&longs;ophorum po&longs;&longs;e&longs;<lb/>&longs;ionem in vulgus indicarent, ac publicarent; & <lb/>velut arcana philo&longs;ophiæ my&longs;teria proderent. </s>

<s id="id.2.1.1.12.1.15.0">Eant <lb/>nunc noui logodedali quidam mechanicorum <lb/>contemptores, perfricent frontem, ſi quam ha<lb/>bent, & ignobilitatem, atquè inutilitatem falſò <lb/>criminari deſinant: quòd ſi & adhuc id minimè <lb/>velint, eos quæſo in inſcitia ſua relinquamus: <lb/>Ariſtotelemquè potius philoſophorum cory<lb/>phæum imitemur, cuius mechanici amoris ardo<lb/>rem acutiſſimæ illæ mechanicæ quæſtiones poſte <lb/>ris traditæ ſatis declarant: qua quidem laude <lb/>Platonem magnificè ſuperauit; qui (vt teſtatur <lb/>Plutarcus) Architam, & Eudoxum mechanicæ <lb/>vtilitatem impenſius colentes ab inſtituto deter<lb/>ruit; quòd nobiliſſimam philoſophorum poſſeſ<lb/>ſionem in vulgus indicarent, ac publicarent; & <lb/>velut arcana philoſophiæ myſteria proderent. </s>

<s id="id.2.1.1.12.1.16.0"><lb/>res &longs;anè meo quidem iudicio pro&longs;us vituperan<pb xlink:href="036/01/007.jpg"/>da, ni&longs;i fortè velimus tam nobilis di&longs;ciplinæ con<lb/>templationem quidem ocio&longs;am laudare; fructum <lb/>verò, & v&longs;um, arti&longs;q; finem improbare. </s>

<s id="id.2.1.1.12.1.17.0">&longs;ed præ <lb/>omnibus mathematicis vnus Archimedes ore <lb/>laudandus e&longs;t pleniore, quem voluit Deus in me<lb/>chanicis velut ideam &longs;ingularem e&longs;&longs;e, quam om<lb/>nes earum &longs;tudio&longs;i ad imitandum &longs;ibi propone<lb/>rent. </s>

<lb/>res ſanè meo quidem iudicio proſus vituperan<pb xlink:href="036/01/007.jpg" xlink:type="simple"/>da, niſi fortè velimus tam nobilis diſciplinæ con<lb/>templationem quidem ocioſam laudare; fructum <lb/>verò, & vſum, artiſq; finem improbare. </s>

<s id="id.2.1.1.12.1.18.0">is enim C&oelig;le&longs;tem globum exiguo admo<lb/>dum, fragili què vitreo orbe conclu&longs;um ita efin<lb/>xit, &longs;imulatis a&longs;tris viuum naturæ opus, ac iura <lb/>poli motibus certis adeò præ &longs;e ferentibus; vt <lb/>æmula naturæ manus tale de &longs;e encomium &longs;it <lb/>promerita: &longs;ic manus naturam, vt natura ma<lb/>num ip&longs;a immitata putetur. </s>

<s id="id.2.1.1.12.1.17.0">ſed præ <lb/>omnibus mathematicis vnus Archimedes ore <lb/>laudandus eſt pleniore, quem voluit Deus in me<lb/>chanicis velut ideam ſingularem eſſe, quam om<lb/>nes earum ſtudioſi ad imitandum ſibi propone<lb/>rent. </s>

<s id="id.2.1.1.12.1.19.0">is poli&longs;pa&longs;tu manu <lb/>leua, & &longs;ola, quinquies millenum modiorum <lb/>pondus attraxit. </s>

<s id="id.2.1.1.12.1.18.0">is enim Cœleſtem globum exiguo admo<lb/>dum, fragili què vitreo orbe concluſum ita efin<lb/>xit, ſimulatis aſtris viuum naturæ opus, ac iura <lb/>poli motibus certis adeò præ ſe ferentibus; vt <lb/>æmula naturæ manus tale de ſe encomium ſit <lb/>promerita: ſic manus naturam, vt natura ma<lb/>num ipſa immitata putetur. </s>

<s id="id.2.1.1.12.1.20.0">nauem in &longs;iccum litus eductam, <lb/>ac grauius oneratam &longs;olus machinis &longs;uis ad &longs;e <lb/>perindè pertraxit, ac &longs;i in mari remis, veli&longs;uè <lb/>impul&longs;a moueretur, <expan abbr="quã">quam</expan> & po&longs;tea in litore (quod <lb/>omnes Siciliæ vires non potuerunt) in mare de<lb/>duxit. </s>

<s id="id.2.1.1.12.1.19.0">is poliſpaſtu manu <lb/>leua, & ſola, quinquies millenum modiorum <lb/>pondus attraxit. </s>

<s id="id.2.1.1.12.1.21.0">ab i&longs;to etiam ea extiterunt bellica tor<lb/>menta, quibus Syracu&longs;æ aduer&longs;us Marcellum <lb/>ita defen&longs;æ &longs;unt, vt pa&longs;&longs;im eorum machinator <lb/>Briareus, & centimanus à Romanis appellare<lb/>tur. </s>

<s id="id.2.1.1.12.1.20.0">nauem in ſiccum litus eductam, <lb/>ac grauius oneratam ſolus machinis ſuis ad ſe <lb/>perindè pertraxit, ac ſi in mari remis, veliſuè <lb/>impulſa moueretur, <expan abbr="quã">quam</expan> & poſtea in litore (quod <lb/>omnes Siciliæ vires non potuerunt) in mare de<lb/>duxit. </s>

<s id="id.2.1.1.12.1.22.0">demum hac arte confi&longs;us eò proce&longs;&longs;it au<lb/>daciæ, vt eam vocem naturæ legibus adeò re<lb/>pugnantem protulerit. </s>

<s id="id.2.1.1.12.1.21.0">ab iſto etiam ea extiterunt bellica tor<lb/>menta, quibus Syracuſæ aduerſus Marcellum <lb/>ita defenſæ ſunt, vt paſſim eorum machinator <lb/>Briareus, & centimanus à Romanis appellare<lb/>tur. </s>

<s id="id.2.1.1.12.1.23.0">Da mihi, vbi &longs;i&longs;tam, ter<pb xlink:href="036/01/008.jpg"/>ramq; mouebo. </s>

<s id="id.2.1.1.12.1.22.0">demum hac arte confiſus eò proceſſit au<lb/>daciæ, vt eam vocem naturæ legibus adeò re<lb/>pugnantem protulerit. </s>

<s id="id.2.1.1.12.1.24.0">quod tamen non modò nos <lb/>vecte tantùm fieri potui&longs;&longs;e in præ&longs;enti libro doce<lb/>mus; verùm etiam, & omnis antiquitas (quod <lb/>multis forta&longs;&longs;è mirabile videbitur) id penitus <lb/>credidi&longs;&longs;e mihi videtur; quæ Neptuno tri<lb/>dentem tanquam vectem attribuit; cuius ope <lb/>terræ concu&longs;&longs;or vbiq; nuncupatur à poetis. </s>

<s id="id.2.1.1.12.1.23.0">Da mihi, vbi ſiſtam, ter<pb xlink:href="036/01/008.jpg" xlink:type="simple"/>ramq; mouebo. </s>

<s id="id.2.1.1.12.1.25.0">ad <lb/>quod etiam a&longs;piciens celeberrimus no&longs;ter poeta <lb/>Neptunum inducit i&longs;ta machina &longs;yrtes, quò ma<lb/>gis apparerent Troianis, &longs;ubleuantem. </s>

<s id="id.2.1.1.12.1.24.0">quod tamen non modò nos <lb/>vecte tantùm fieri potuiſſe in præſenti libro doce<lb/>mus; verùm etiam, & omnis antiquitas (quod <lb/>multis fortaſſè mirabile videbitur) id penitus <lb/>credidiſſe mihi videtur; quæ Neptuno tri<lb/>dentem tanquam vectem attribuit; cuius ope <lb/>terræ concuſſor vbiq; nuncupatur à poetis. </s>

<s id="id.2.1.1.12.1.25.0">ad <lb/>quod etiam aſpiciens celeberrimus noſter poeta <lb/>Neptunum inducit iſta machina ſyrtes, quò ma<lb/>gis apparerent Troianis, ſubleuantem. </s>

<s id="id.2.1.1.13.1.1.0">“Leuat ipſe tridenti <lb/>& vaſtas aperit ſyrtes.” </s>

<s id="id.2.1.1.13.1.1.0">“Leuat ip&longs;e tridenti <lb/>& va&longs;tas aperit &longs;yrtes.” </s>

<s id="id.2.1.1.14.1.1.0">Mechanici præterea fuerunt Heron, Cteſibius, <lb/>& Pappus, qui licet ad mechanicæ apicem, perin<lb/>de atq; Archimedes, euecti fortaſſè minimè ſint; <lb/>mechanicam tamen facultatem egregiè percal<lb/>luerunt; taleſq; fuerunt, & præſertim Pappus, vt <lb/>eum me ducem ſequentem nemo (vt opinor) cul<lb/>pauerit. </s>

<s id="id.2.1.1.14.1.1.0">Mechanici præterea fuerunt Heron, Cte&longs;ibius, <lb/>& Pappus, qui licet ad mechanicæ apicem, perin<lb/>de atq; Archimedes, euecti forta&longs;&longs;è minimè &longs;int; <lb/>mechanicam tamen facultatem egregiè percal<lb/>luerunt; tale&longs;q; fuerunt, & præ&longs;ertim Pappus, vt <lb/>eum me ducem &longs;equentem nemo (vt opinor) cul<lb/>pauerit. </s>

<s id="id.2.1.1.14.1.2.0">quod & propterea libentius feci, quòd <lb/>nè latum quidem vnguem ab Archimedeis prin<lb/>cipijs Pappus recedat. </s>

<s id="id.2.1.1.14.1.3.0">ego enim in hac præſertim <lb/>facultate Archimedis veſtigijs hærere ſemper vo <lb/>lui: & licet eius lucubrationes ad <expan abbr="mechanicã">mechanicam</expan> per<pb xlink:href="036/01/009.jpg" xlink:type="simple"/>tinentes multis ab hinc annis paſſim ſoleant do<lb/>ctis deſiderari: eruditiſſimus tamen libellus de æ<lb/>queponderantibus præ manibus <expan abbr="hominũ">hominum</expan> adhuc <lb/>verſatur, in quò tanquam in copioſiſſima pœnu <lb/>omnia ferè mechanica dogmata repoſita mihi vi<lb/>dentur; quem ſanè libellum, ſi ætatis noſtræ mathe<lb/>matici ſibi magis familiarem adhibuiſſent; reperiſ<lb/>ſent ſanè <expan abbr="ſentẽtias">ſententias</expan> multas, quas modó ipſi firmas, <lb/>& ratas eſſe docent; ſubtiliſſimè, atquè veriſ<lb/>ſimè conuulſas, & labefactatas. </s>

<s id="id.2.1.1.14.1.3.0">ego enim in hac præ&longs;ertim <lb/>facultate Archimedis ve&longs;tigijs hærere &longs;emper vo <lb/>lui: & licet eius lucubrationes ad <expan abbr="mechanicã">mechanicam</expan> per<pb xlink:href="036/01/009.jpg"/>tinentes multis ab hinc annis pa&longs;&longs;im &longs;oleant do<lb/>ctis de&longs;iderari: eruditi&longs;&longs;imus tamen libellus de æ<lb/>queponderantibus præ manibus <expan abbr="homin&utilde;">hominum</expan> adhuc <lb/>ver&longs;atur, in quò tanquam in copio&longs;i&longs;&longs;ima p&oelig;nu <lb/>omnia ferè mechanica dogmata repo&longs;ita mihi vi<lb/>dentur; quem &longs;anè libellum, &longs;i ætatis no&longs;træ mathe<lb/>matici &longs;ibi magis familiarem adhibui&longs;&longs;ent; reperi&longs;<lb/>&longs;ent &longs;anè <expan abbr="&longs;ent&etilde;tias">&longs;ententias</expan> multas, quas modó ip&longs;i firmas, <lb/>& ratas e&longs;&longs;e docent; &longs;ubtili&longs;&longs;imè, atquè veri&longs;<lb/>&longs;imè conuul&longs;as, & labefactatas. </s>

<s id="id.2.1.1.14.1.4.0">ſed hoc vi<lb/>derint ipſi. </s>

<s id="id.2.1.1.14.1.4.0">&longs;ed hoc vi<lb/>derint ip&longs;i. </s>

<s id="id.2.1.1.14.1.5.0">ego enim ad Pappum redeo, qui <lb/>ad vſum mathematicarum vberiorem, emulu<lb/>mentorumquè acceſſiones amplificandas peni<lb/>tus conuerſus, de quinque principibus machi<lb/>nis, Vecte nempè, Trochlea, Axe in peri<lb/>trochio, Cuneo, & Cochlea, multa egre<lb/>giè philoſophatus eſt; demonſtrauit què quicquid <lb/>in machinis, aut cogitari peritè, aut acutè <lb/>definiri, aut certò ſtatui poteſt, id omne quin<lb/>què illis infinita vi præditis machinis referen<lb/>dum eſſe. </s>

<s id="id.2.1.1.14.1.5.0">ego enim ad Pappum redeo, qui <lb/>ad v&longs;um mathematicarum vberiorem, emulu<lb/>mentorumquè acce&longs;&longs;iones amplificandas peni<lb/>tus conuer&longs;us, de quinque principibus machi<lb/>nis, Vecte nempè, Trochlea, Axe in peri<lb/>trochio, Cuneo, & Cochlea, multa egre<lb/>giè philo&longs;ophatus e&longs;t; demon&longs;trauit què quicquid <lb/>in machinis, aut cogitari peritè, aut acutè <lb/>definiri, aut certò &longs;tatui pote&longs;t, id omne quin<lb/>què illis infinita vi præditis machinis referen<lb/>dum e&longs;&longs;e. </s>

<s id="id.2.1.1.14.1.6.0">atquè vtinam iniuria temporis ni<lb/>hil è tanti viri ſcriptis abraſiſſet: nec enim tam <lb/>denſa inſcitiæ caligo vniuerſum propè terra<lb/>rum orbem obtexiſſet, neque tanta mechani<lb/>cæ facultatis eſſet ignoratio conſecuta, vt ma<lb/>thematicarum proceres exiſtimarentur illi, qui <lb/>modò ineptiſſima quadam diſtinctione, diffi<pb xlink:href="036/01/010.jpg" xlink:type="simple"/>cultates nonnullas, nec illas tamen ſatis ar<lb/>duas, & obſcuras è medio tollunt. </s>

<s id="id.2.1.1.14.1.6.0">atquè vtinam iniuria temporis ni<lb/>hil è tanti viri &longs;criptis abra&longs;i&longs;&longs;et: nec enim tam <lb/>den&longs;a in&longs;citiæ caligo vniuer&longs;um propè terra<lb/>rum orbem obtexi&longs;&longs;et, neque tanta mechani<lb/>cæ facultatis e&longs;&longs;et ignoratio con&longs;ecuta, vt ma<lb/>thematicarum proceres exi&longs;timarentur illi, qui <lb/>modò inepti&longs;&longs;ima quadam di&longs;tinctione, diffi<pb xlink:href="036/01/010.jpg"/>cultates nonnullas, nec illas tamen &longs;atis ar<lb/>duas, & ob&longs;curas è medio tollunt. </s>

<s id="id.2.1.1.14.1.7.0">reperiun<lb/>tur enim aliqui, noſtraq; ætate emunctæ naris <lb/>mathematici, qui mechanicam, tùm mathe<lb/>maticè ſeorſum, tùm phiſicè conſiderari poſ<lb/>ſe affirmant; ac ſi aliquando, vel ſine demon<lb/>ſtrationibus geometricis, vel ſine vero motu <lb/>res mechanicæ conſiderari poſſint: qua ſanè di<lb/>ſtinctione (vt leuius cum illis agam) nihil aliud mi<lb/>hi comminiſci videntur, quàm vt dum ſe, tùm <lb/>phiſicos, tùm mathematicos proferant, vtra<lb/>que (quod aiunt) ſella excludantur. </s>

<s id="id.2.1.1.14.1.7.0">reperiun<lb/>tur enim aliqui, no&longs;traq; ætate emunctæ naris <lb/>mathematici, qui mechanicam, tùm mathe<lb/>maticè &longs;eor&longs;um, tùm phi&longs;icè con&longs;iderari po&longs;<lb/>&longs;e affirmant; ac &longs;i aliquando, vel &longs;ine demon<lb/>&longs;trationibus geometricis, vel &longs;ine vero motu <lb/>res mechanicæ con&longs;iderari po&longs;&longs;int: qua &longs;anè di<lb/>&longs;tinctione (vt leuius cum illis agam) nihil aliud mi<lb/>hi commini&longs;ci videntur, quàm vt dum &longs;e, tùm <lb/>phi&longs;icos, tùm mathematicos proferant, vtra<lb/>que (quod aiunt) &longs;ella excludantur. </s>

<s id="id.2.1.1.14.1.8.0">nequè <lb/>enim amplius mechanica, ſi à machinis abſtra<lb/>hatur, & ſeiungatur, mechanica poteſt appel<lb/>lari. </s>

<s id="id.2.1.1.14.1.8.0">nequè <lb/>enim amplius mechanica, &longs;i à machinis ab&longs;tra<lb/>hatur, & &longs;eiungatur, mechanica pote&longs;t appel<lb/>lari. </s>

<s id="id.2.1.1.14.1.9.0">Emicuit tamen inter iſtas tenebras (quam<lb/>uis alij quoquè nonnulli fuerint præclariſſimi) <lb/>Solis inſtar Federicus Commandinus, qui multis <lb/>doctiſſimis elucubrationibus amiſſum mathema<lb/>ticarum patrimonium non modò reſtaurauit, <lb/>verùm etiam auctiùs, & locupletiùs effecit. </s>

<s id="id.2.1.1.14.1.9.0">Emicuit tamen inter i&longs;tas tenebras (quam<lb/>uis alij quoquè nonnulli fuerint præclari&longs;&longs;imi) <lb/>Solis in&longs;tar Federicus Commandinus, qui multis <lb/>docti&longs;&longs;imis elucubrationibus ami&longs;&longs;um mathema<lb/>ticarum patrimonium non modò re&longs;taurauit, <lb/>verùm etiam auctiùs, & locupletiùs effecit. </s>

<s id="id.2.1.1.14.1.10.0"><lb/>erat enim &longs;ummus i&longs;te vir omnibus adeò facul<lb/>tatibus mathematicis ornatus, vt in eo Archi<lb/>tas, Eudoxus, Heron, Euclides, Theon, Ari<lb/>&longs;tarcus, Diophantus, Theodo&longs;ius, Ptolemæus <lb/>Apollonius, Serenus, Pappus, quin & ip<lb/>&longs;emet Archimedes (&longs;iquidem ip&longs;ius in Archi<lb/>medem &longs;cripta Archimedis olent lucernam) re <pb xlink:href="036/01/011.jpg"/>uixi&longs;&longs;e viderentur. </s>

<lb/>erat enim ſummus iſte vir omnibus adeò facul<lb/>tatibus mathematicis ornatus, vt in eo Archi<lb/>tas, Eudoxus, Heron, Euclides, Theon, Ari<lb/>ſtarcus, Diophantus, Theodoſius, Ptolemæus <lb/>Apollonius, Serenus, Pappus, quin & ip<lb/>ſemet Archimedes (ſiquidem ipſius in Archi<lb/>medem ſcripta Archimedis olent lucernam) re <pb xlink:href="036/01/011.jpg" xlink:type="simple"/>uixiſſe viderentur. </s>

<s id="id.2.1.1.14.1.11.0">& ecce repentè è tenebris (vt <lb/>confidimus) ac vinculis corporis in lucem, li<lb/>bertatem què productus mathematicas alieni&longs;<lb/>&longs;imo tempore optimo, & præ&longs;tanti&longs;&longs;imo patre <lb/>orbatas, nos verò ita con&longs;ternatos reliquit, vt e<lb/>ius de&longs;iderium vix longo &longs;ermone mitigare <lb/>po&longs;&longs;e videamur. </s>

<s id="id.2.1.1.14.1.11.0">& ecce repentè è tenebris (vt <lb/>confidimus) ac vinculis corporis in lucem, li<lb/>bertatem què productus mathematicas alieniſ<lb/>ſimo tempore optimo, & præſtantiſſimo patre <lb/>orbatas, nos verò ita conſternatos reliquit, vt e<lb/>ius deſiderium vix longo ſermone mitigare <lb/>poſſe videamur. </s>

<s id="id.2.1.1.14.1.12.0">Ille tamen perpetuò in alia<lb/>rum mathematicarum explicationem ver&longs;ans, <lb/>mechanicam facultatem, aut penitus præter<lb/>mi&longs;it, aut modicè attigit. </s>

<s id="id.2.1.1.14.1.12.0">Ille tamen perpetuò in alia<lb/>rum mathematicarum explicationem verſans, <lb/>mechanicam facultatem, aut penitus præter<lb/>miſit, aut modicè attigit. </s>

<s id="id.2.1.1.14.1.13.0">Quapropter in hoc <lb/>&longs;tudium ardentiùs ego incumbere cæpi, nec me <lb/>vnquam per omne mathematum genus vagan<lb/>tem ea &longs;olicitudo de&longs;eruit; ecquid ex vno <lb/>quoquè decerpi, ac delibari po&longs;&longs;it; quo ad me<lb/>chanicam expoliendam, & exornandam acco<lb/>modatior e&longs;&longs;e po&longs;&longs;em. </s>

<s id="id.2.1.1.14.1.13.0">Quapropter in hoc <lb/>ſtudium ardentiùs ego incumbere cæpi, nec me <lb/>vnquam per omne mathematum genus vagan<lb/>tem ea ſolicitudo deſeruit; ecquid ex vno <lb/>quoquè decerpi, ac delibari poſſit; quo ad me<lb/>chanicam expoliendam, & exornandam acco<lb/>modatior eſſe poſſem. </s>

<s id="id.2.1.1.14.1.14.0">Nunc verò cùm mihi <lb/>videar, noni ea quidem omnia, quæ ad mecha<lb/>nicam pertinent, perfeci&longs;&longs;e; &longs;ed eò v&longs;q; tamen <lb/>progre&longs;&longs;us, vt ijs, qui ex Pappo, ex Vitruuio, <lb/>& ex alijs didicerint, quid &longs;it Vectis, quid Tro<lb/>chlea, quid Axis in peritrochio, quid Cuneus, <lb/>quid Cochlea; quomodoq; vt pondera moueri <lb/>po&longs;&longs;int, aptari debeant; adhuc tamen acciden<lb/>tia permulta, quæ inter potentiam, & pondus <lb/>vectis virtute illis in&longs;unt in&longs;trumentis, perdi&longs;ce<lb/>re cupiunt, opis aliquid adferre po&longs;&longs;im; putaui <lb/>tempus iam po&longs;tulare, vt prodirem; & nauatæ <pb xlink:href="036/01/012.jpg"/>in hoc genere operæ &longs;pecimen aliquod darem. </s>

<s id="id.2.1.1.14.1.14.0">Nunc verò cùm mihi <lb/>videar, noni ea quidem omnia, quæ ad mecha<lb/>nicam pertinent, perfeciſſe; ſed eò vſq; tamen <lb/>progreſſus, vt ijs, qui ex Pappo, ex Vitruuio, <lb/>& ex alijs didicerint, quid ſit Vectis, quid Tro<lb/>chlea, quid Axis in peritrochio, quid Cuneus, <lb/>quid Cochlea; quomodoq; vt pondera moueri <lb/>poſſint, aptari debeant; adhuc tamen acciden<lb/>tia permulta, quæ inter potentiam, & pondus <lb/>vectis virtute illis inſunt inſtrumentis, perdiſce<lb/>re cupiunt, opis aliquid adferre poſſim; putaui <lb/>tempus iam poſtulare, vt prodirem; & nauatæ <pb xlink:href="036/01/012.jpg" xlink:type="simple"/>in hoc genere operæ ſpecimen aliquod darem. </s>

<s id="id.2.1.1.14.1.15.0"><lb/>Verùm quò facilius totius operis &longs;ub&longs;tructio <lb/>ad fa&longs;tigium &longs;uum per duceretur, nonnulla quo<lb/>què de libra fuerunt pertractanda, & præ&longs;er<lb/>tim dum vnico pondere alterum &longs;olum ip&longs;ius <lb/>brachium penitus deprimitur: que in re mi<lb/>rum e&longs;t quantas fecerint ruinas Iordanus (qui <lb/>inter recentiores maximæ fuit auctoritatis) & <lb/>alij; qui hanc rem &longs;ibi di&longs;cutiendam propo&longs;ue<lb/>runt. </s>

<s id="id.2.1.1.14.1.16.0">opus &longs;anè arduum, & for&longs;an viribus no<lb/>&longs;tris impar aggre&longs;si &longs;umus; in eo tamen digni, vt <lb/>no&longs;tros conatus, & indu&longs;triam ad præclara ten<lb/>dentem bonorum omnium perpetuus applau<lb/>&longs;us, approbatioq; comitetur; quòd ad &longs;tudium <lb/>tàm illu&longs;tre, tam magnificum, tam laudabile <lb/>contulimus quicquid habuimus virium. </s>

<lb/>Verùm quò facilius totius operis ſubſtructio <lb/>ad faſtigium ſuum per duceretur, nonnulla quo<lb/>què de libra fuerunt pertractanda, & præſer<lb/>tim dum vnico pondere alterum ſolum ipſius <lb/>brachium penitus deprimitur: que in re mi<lb/>rum eſt quantas fecerint ruinas Iordanus (qui <lb/>inter recentiores maximæ fuit auctoritatis) & <lb/>alij; qui hanc rem ſibi diſcutiendam propoſue<lb/>runt. </s>

<s id="id.2.1.1.14.1.17.0">quod <lb/>&longs;anè qualecunq; &longs;it, tibi celeberrime PRINCEPS <lb/>nuncupandum cen&longs;uimus; cuius &longs;anè con&longs;ilij, <lb/>atq; in&longs;tituti no&longs;tri rationes multas reddere in <lb/>promptu e&longs;t: & primùm hæreditaria tibi in fa<lb/>miliam no&longs;tram promerita, quibus nos ita de<lb/>uictos habes; vt facilè intelligamus ad fortunas <lb/>non modò no&longs;tras, verùm & ad &longs;anguinem, & <lb/>vitam quoq; pro tua dignitate propendendam <lb/>parati&longs;&longs;imos e&longs;&longs;e debere. </s>

<s id="id.2.1.1.14.1.16.0">opus ſanè arduum, & forſan viribus no<lb/>ſtris impar aggreſsi ſumus; in eo tamen digni, vt <lb/>noſtros conatus, & induſtriam ad præclara ten<lb/>dentem bonorum omnium perpetuus applau<lb/>ſus, approbatioq; comitetur; quòd ad ſtudium <lb/>tàm illuſtre, tam magnificum, tam laudabile <lb/>contulimus quicquid habuimus virium. </s>

<s id="id.2.1.1.14.1.18.0">Præterea illud non <lb/>parui quoq; ponderis accedit, quòd à pueri<lb/>tia literarum omnium, &longs;ed præcipuè mathe<pb xlink:href="036/01/013.jpg"/>maticarum de&longs;iderio ita fueris incen&longs;us, vt ni<lb/>&longs;i illis adeptis vitam tibi acerbam, atq; in&longs;ua<lb/>uem &longs;tatueres. </s>

<s id="id.2.1.1.14.1.17.0">quod <lb/>ſanè qualecunq; ſit, tibi celeberrime PRINCEPS <lb/>nuncupandum cenſuimus; cuius ſanè conſilij, <lb/>atq; inſtituti noſtri rationes multas reddere in <lb/>promptu eſt: & primùm hæreditaria tibi in fa<lb/>miliam noſtram promerita, quibus nos ita de<lb/>uictos habes; vt facilè intelligamus ad fortunas <lb/>non modò noſtras, verùm & ad ſanguinem, & <lb/>vitam quoq; pro tua dignitate propendendam <lb/>paratiſſimos eſſe debere. </s>

<s id="id.2.1.1.14.1.19.0">proinde in earum &longs;tudio infi<lb/>xus primam ætatis partem in illis percipiendis <lb/>exegi&longs;ti, eamquè &longs;æpius verè principe dignam <lb/>vocem protuli&longs;ti, te propterea mathematicis <lb/>præ&longs;ertim delectari, quòd i&longs;tæ maximè ex do<lb/>me&longs;tico illo, & vmbratili vitæ genere in Solem <lb/>(quod dicitur) & puluerem prodire po&longs;sint: cu<lb/>ius &longs;anè rei tuum flagranti&longs;simum ab ineunte æta <lb/>te peritiæ militaris de&longs;iderium, exploratum in<lb/>dicium poterat e&longs;&longs;e, ni&longs;i nimis emendicatæ men<lb/>tis e&longs;&longs;et ea proponere, quæ à te &longs;perari po&longs;&longs;ent; <lb/>quando tu penitus adole&longs;cens, egregia multa fa<lb/>cinora proficere matura&longs;ti. </s>

<s id="id.2.1.1.14.1.18.0">Præterea illud non <lb/>parui quoq; ponderis accedit, quòd à pueri<lb/>tia literarum omnium, ſed præcipuè mathe<pb xlink:href="036/01/013.jpg" xlink:type="simple"/>maticarum deſiderio ita fueris incenſus, vt ni<lb/>ſi illis adeptis vitam tibi acerbam, atq; inſua<lb/>uem ſtatueres. </s>

<s id="id.2.1.1.14.1.20.0">Tu enim cùm iam <lb/>à &longs;ancti&longs;&longs;imo Pontifice Pio V &longs;aluberrimæ Prin<lb/>cipum Chri&longs;tianorum coniunctionis fundamen<lb/>ta iacta e&longs;&longs;ent, alacer admodum ad debellan<lb/>dos Chri&longs;ti ho&longs;tes profectus, &longs;olidi&longs;&longs;imam, ac ve<lb/>ri&longs;&longs;imam gloriam tibi compara&longs;ti. </s>

<s id="id.2.1.1.14.1.19.0">proinde in earum ſtudio infi<lb/>xus primam ætatis partem in illis percipiendis <lb/>exegiſti, eamquè ſæpius verè principe dignam <lb/>vocem protuliſti, te propterea mathematicis <lb/>præſertim delectari, quòd iſtæ maximè ex do<lb/>meſtico illo, & vmbratili vitæ genere in Solem <lb/>(quod dicitur) & puluerem prodire poſsint: cu<lb/>ius ſanè rei tuum flagrantiſsimum ab ineunte æta <lb/>te peritiæ militaris deſiderium, exploratum in<lb/>dicium poterat eſſe, niſi nimis emendicatæ men<lb/>tis eſſet ea proponere, quæ à te ſperari poſſent; <lb/>quando tu penitus adoleſcens, egregia multa fa<lb/>cinora proficere maturaſti. </s>

<s id="id.2.1.1.14.1.21.0">Tu quoties de <lb/>&longs;umma rerum deliberatum e&longs;t, eas &longs;ententias <lb/>dixi&longs;ti, quæ &longs;ummam prudentiam cùm &longs;umma <lb/>animi excel&longs;itate coniunctam indicarent. </s>

<s id="id.2.1.1.14.1.20.0">Tu enim cùm iam <lb/>à ſanctiſſimo Pontifice Pio V ſaluberrimæ Prin<lb/>cipum Chriſtianorum coniunctionis fundamen<lb/>ta iacta eſſent, alacer admodum ad debellan<lb/>dos Chriſti hoſtes profectus, ſolidiſſimam, ac ve<lb/>riſſimam gloriam tibi comparaſti. </s>

<s id="id.2.1.1.14.1.22.0">ommit<lb/>tam interim pleraq; alia illis temporibus egre<lb/>giè, viriliter què à te ge&longs;ta, ne tibi ip&longs;i ea, quæ <lb/>omnibus &longs;unt manife&longs;ta, palàm facere videar: <pb xlink:href="036/01/014.jpg"/>quæ cùm omnia magna, & præclara &longs;int; mul<lb/>tò tamen à te maiora, & præclara expectant <lb/>adhuc homines. </s>

<s id="id.2.1.1.14.1.21.0">Tu quoties de <lb/>ſumma rerum deliberatum eſt, eas ſententias <lb/>dixiſti, quæ ſummam prudentiam cùm ſumma <lb/>animi excelſitate coniunctam indicarent. </s>

<s id="id.2.1.1.14.1.23.0">Vale interim præ&longs;tanti&longs;&longs;imum <lb/>orbis decus, & &longs;i quando aliquid otij nactus <lb/>fueris has meas vigiliolas a&longs;picere ne dedi<lb/>gneris. </s>

<s id="id.2.1.1.14.1.22.0">ommit<lb/>tam interim pleraq; alia illis temporibus egre<lb/>giè, viriliter què à te geſta, ne tibi ipſi ea, quæ <lb/>omnibus ſunt manifeſta, palàm facere videar: <pb xlink:href="036/01/014.jpg" xlink:type="simple"/>quæ cùm omnia magna, & præclara ſint; mul<lb/>tò tamen à te maiora, & præclara expectant <lb/>adhuc homines. </s>

<s id="id.2.1.1.14.1.23.0">Vale interim præſtantiſſimum <lb/>orbis decus, & ſi quando aliquid otij nactus <lb/>fueris has meas vigiliolas aſpicere ne dedi<lb/>gneris. </s>

<s id="id.2.1.1.16.1.1.0">GVIDIVBALDI <lb/>E MARCHIONIBVS <lb/>MONTIS. </s>

<s id="id.2.1.1.16.3.1.0">MECHANICORVM <lb/>LIBER. </s>

</section>

</front>

<body>

<chap>

<s id="id.2.1.1.16.7.1.0">DEFINITIONES. </s>

<s id="id.2.1.1.17.1.1.0">Centrvm grauitatis vniuſcu<lb/>iuſq; corporis eſt punctum quod<lb/>dam intra poſitum, à quo ſi gra<lb/>ue appenſum mente concipiatur, <lb/>dum fertur, quieſcit; & ſeruat eam, <lb/>quam in principio habebat poſi<lb/>tionem: neq; in ipſa latione circumuertitur. </s>

<s id="id.2.1.1.17.1.1.0">Centrvm grauitatis vniu&longs;cu<lb/>iu&longs;q; corporis e&longs;t punctum quod<lb/>dam intra po&longs;itum, à quo &longs;i gra<lb/>ue appen&longs;um mente concipiatur, <lb/>dum fertur, quie&longs;cit; & &longs;eruat eam, <lb/>quam in principio habebat po&longs;i<lb/>tionem: neq; in ip&longs;a latione circumuertitur. </s>

<s id="id.2.1.1.18.1.1.0">Hanc centri grauitatis definitionem Pappus Alexandrinus in <lb/>octauo Mathematicarum collectionum libro tradidit. </s>

<s id="id.2.1.1.18.1.2.0">Federicus <lb/>verò Commandinus in libro de centro grauitatis ſolidorum idem <lb/>centrum deſcribendo ita explicauit. </s>

<s id="id.2.1.1.18.1.2.0">Federicus <lb/>verò Commandinus in libro de centro grauitatis &longs;olidorum idem <lb/>centrum de&longs;cribendo ita explicauit. </s>

<s id="id.2.1.1.19.1.1.0">Centrum grauitatis vniuſcuiuſq; ſolidæ figu<lb/>ræ eſt punctum illud intra poſitum, circa quod <lb/>vndiq; partes æqualium momentorum conſi<lb/>ſtunt. </s>

<s id="id.2.1.1.19.1.1.0">Centrum grauitatis vniu&longs;cuiu&longs;q; &longs;olidæ figu<lb/>ræ e&longs;t punctum illud intra po&longs;itum, circa quod <lb/>vndiq; partes æqualium momentorum con&longs;i<lb/>&longs;tunt. </s>

<s id="id.2.1.1.19.1.2.0">ſi enim per tale centrum ducatur planum <lb/>figuram quomodocunq; ſecans ſemper in par<lb/>tes æqueponderantes ipſam diuidet. </s>

<s id="id.2.1.1.19.1.2.0">&longs;i enim per tale centrum ducatur planum <lb/>figuram quomodocunq; &longs;ecans &longs;emper in par<lb/>tes æqueponderantes ip&longs;am diuidet. </s>

<s id="id.2.1.1.21.1.1.0">COMMVNES NOTIONES. </s>

<s id="id.2.1.1.22.1.1.0">Si ab æqueponderantibus æqueponderantia au<lb/>ferantur, reliqua æqueponderabunt. </s>

<s id="id.2.1.1.24.1.1.0">Si æqueponderantibus æqueponderantia adii<lb/>ciantur, tota ſimul æqueponderabunt. </s>

<s id="id.2.1.1.24.1.1.0">Si æqueponderantibus æqueponderantia adii<lb/>ciantur, tota &longs;imul æqueponderabunt. </s>

<s id="id.2.1.1.26.1.1.0">Quæ eidem æqueponderant, inter ſe æquè ſunt <lb/>grauia. </s>

<s id="id.2.1.1.26.1.1.0">Quæ eidem æqueponderant, inter &longs;e æquè &longs;unt <lb/>grauia. </s>

<s id="id.2.1.1.27.1.1.0">SVPPOSITIONES. </s>

<s id="id.2.1.1.28.1.1.0">Vnius corporis vnum tantùm eſt centrum gra<lb/>uitatis. </s>

<s id="id.2.1.1.28.1.1.0">Vnius corporis vnum tantùm e&longs;t centrum gra<lb/>uitatis. </s>

<s id="id.2.1.1.30.1.1.0">Vnius corporis centrum grauitatis ſemper in <lb/>eodem eſt ſitu reſpectu ſui corporis. </s>

<s id="id.2.1.1.30.1.1.0">Vnius corporis centrum grauitatis &longs;emper in <lb/>eodem e&longs;t &longs;itu re&longs;pectu &longs;ui corporis. </s>

<s id="id.2.1.1.32.1.1.0">Secundùm grauitatis centrum pondera deor<lb/>ſum feruntur. </s>

<s id="id.2.1.1.32.1.1.0">Secundùm grauitatis centrum pondera deor<lb/>&longs;um feruntur. </s>

</chap>

<chap>

<s id="id.2.1.1.34.1.1.0">DE LIBRA. </s>

<s id="id.2.1.1.35.1.1.0">Anteqvam de libra ſermo ha<lb/>beatur, vtres clarior eluceſcat, ſit <lb/>libra AB recta linea; CD verò <lb/>trutina, quæ ſecundum commu<lb/>nem conſuetudinem horizonti <lb/>ſemper eſt perpendicularis. </s>

<s id="id.2.1.1.35.1.1.0">Anteqvam de libra &longs;ermo ha<lb/>beatur, vtres clarior eluce&longs;cat, &longs;it <lb/>libra AB recta linea; CD verò <lb/>trutina, quæ &longs;ecundum commu<lb/>nem con&longs;uetudinem horizonti <lb/>&longs;emper e&longs;t perpendicularis. </s>

<s id="id.2.1.1.35.1.2.0">pun<lb/>ctum autem C immobile, circa quod vertitur li<lb/>bra, centrum libræ <lb/>vocetur. </s>

<s id="id.2.1.1.35.1.3.0">itidemque <lb/>(quamuis tamen im<lb/>proprie) ſiue ſupra, <lb/>ſiue infra libram fue<lb/>rit conſtitutum. </s>

<s id="id.2.1.1.35.1.3.0">itidemque <lb/>(quamuis tamen im<lb/>proprie) &longs;iue &longs;upra, <lb/>&longs;iue infra libram fue<lb/>rit con&longs;titutum. </s>

<s id="id.2.1.1.35.1.4.0">CA <lb/>verò, & CB, tum di<lb/>ſtantiæ, tum libræ <lb/>brachia nuncupen<lb/>tur. </s>

<s id="id.2.1.1.35.1.4.0">CA <lb/>verò, & CB, tum di<lb/>&longs;tantiæ, tum libræ <lb/>brachia nuncupen<lb/>tur. </s>

<s id="id.2.1.1.35.1.5.0">& ſi à centro li<lb/>bræ ſupra, vel infra <lb/>

<s id="id.2.1.1.35.1.5.0">& &longs;i à centro li<lb/>bræ &longs;upra, vel infra <lb/><figure id="id.036.01.017.1.jpg" xlink:href="036/01/017/1.jpg"></figure><lb/>libram con&longs;tituto ip&longs;i AB perpendicularis duca<lb/>tur, hæc perpendiculum vocetur, quæ libram AB <lb/>&longs;ub&longs;tinebit; & quocunque modo moueatur libra, <lb/>ip&longs;i &longs;emper perpendicularis exi&longs;tet. </s>

<lb/>libram conſtituto ipſi AB perpendicularis duca<lb/>tur, hæc perpendiculum vocetur, quæ libram AB <lb/>ſubſtinebit; & quocunque modo moueatur libra, <lb/>ipſi ſemper perpendicularis exiſtet. </s>

<s id="id.2.1.1.37.1.1.0">LEMMA. </s>

<s id="id.2.1.1.38.1.1.0">Sit linea AB horizonti perpendicularis, & dia <lb/>metro AB circulus deſcribatur AEBD, cuius <lb/>centrum C. </s>

<s id="id.2.1.1.38.1.1.0">Sit linea AB horizonti perpendicularis, & dia <lb/>metro AB circulus de&longs;cribatur AEBD, cuius <lb/>centrum C. </s>

<s id="id.2.1.1.38.1.1.0.a">Dico punctum B infimum eſſe lo<lb/>cum circumferentiæ circuli AEBD; punctum <lb/>verò A ſublimiorem; & quælibet puncta, vt DE <lb/>æqualiter à puncto A diſtantia æqualiter eſſe <lb/>deorſum; quæ verò propius ſunt ipſi A eis, quæ <lb/>magis diſtant, ſublimiora eſſe. </s>

<s id="id.2.1.1.38.1.1.0.a">Dico punctum B infimum e&longs;&longs;e lo<lb/>cum circumferentiæ circuli AEBD; punctum <lb/>verò A &longs;ublimiorem; & quælibet puncta, vt DE <lb/>æqualiter à puncto A di&longs;tantia æqualiter e&longs;&longs;e <lb/>deor&longs;um; quæ verò propius &longs;unt ip&longs;i A eis, quæ <lb/>magis di&longs;tant, &longs;ublimiora e&longs;&longs;e. </s>

<s id="id.2.1.1.39.1.1.0">Producatur AB vſq; ad mundi cen<lb/>trum, quod ſit F; deinde in circuli circum<lb/>

<s id="id.2.1.1.39.1.1.0">Producatur AB v&longs;q; ad mundi cen<lb/>trum, quod &longs;it F; deinde in circuli circum<lb/><arrow.to.target n="note1"></arrow.to.target>ferentia quoduis accipiatur punctum G; <lb/>connectanturq; FG FD FE. </s>

<arrow.to.target n="note1" xlink:type="simple"/>ferentia quoduis accipiatur punctum G; <lb/>connectanturq; FG FD FE. </s>

<s id="id.2.1.1.39.1.2.0">Quoniam <lb/>n. BF minima e&longs;t omnium, quæ à puncto <lb/>F ad circumferentiam AEBD ducun<lb/>tur; erit BF ip&longs;a FG minor. </s>

<s id="id.2.1.1.39.1.2.0">Quoniam <lb/>n. BF minima eſt omnium, quæ à puncto <lb/>F ad circumferentiam AEBD ducun<lb/>tur; erit BF ipſa FG minor. </s>

<s id="id.2.1.1.39.1.3.0">quare punctum <lb/>B propius erit puncto F, quàm G. </s>

<s id="id.2.1.1.39.1.3.0.a">hacq; <lb/>ratione o&longs;tendetur punctum B quouis alio <lb/>puncto circumferentiæ circuli AEDB <lb/>mundi centro propius e&longs;&longs;e. </s>

<s id="id.2.1.1.39.1.3.0.a">hacq; <lb/>ratione oſtendetur punctum B quouis alio <lb/>puncto circumferentiæ circuli AEDB <lb/>mundi centro propius eſſe. </s>

<s id="id.2.1.1.39.1.4.0">erit igitur pun<lb/>ctum B circumferentiæ circuli AEBD <lb/>infimus locus. </s>

<s id="id.2.1.1.39.1.5.0">Deinde quoniam AF per <lb/>centrum ducta maior e&longs;t ip&longs;a GF; erit <lb/>punctum A non <expan abbr="&longs;ol&utilde;">&longs;olum</expan> ip&longs;o G, verum etiam <lb/>quouis alio puncto circumferentiæ circuli <lb/>AEBD &longs;ublimius. </s>

<s id="id.2.1.1.39.1.5.0">Deinde quoniam AF per <lb/>centrum ducta maior eſt ipſa GF; erit <lb/>punctum A non <expan abbr="ſolũ">ſolum</expan> ipſo G, verum etiam <lb/>quouis alio puncto circumferentiæ circuli <lb/>AEBD ſublimius. </s>

<s id="id.2.1.1.39.1.6.0">Præterea quoniam DF <lb/>FE &longs;unt æquales; puncta DE æqualiter <lb/><figure id="id.036.01.018.1.jpg" xlink:href="036/01/018/1.jpg"></figure><lb/>mundi centro di&longs;tabunt. </s>

<s id="id.2.1.1.39.1.6.0">Præterea quoniam DF <lb/>FE ſunt æquales; puncta DE æqualiter <lb/>

<s id="id.2.1.1.39.1.7.0">& cum DF maior &longs;it FG; erit pun<lb/>ctum D ip&longs;i A propius puncto G &longs;ublimius. </s>

<s id="id.2.1.1.39.1.8.0">quæ omnia demon<lb/>&longs;trare oportebat. </s>

<lb/>mundi centro diſtabunt. </s>

<s id="id.2.1.1.39.1.7.0">& cum DF maior ſit FG; erit pun<lb/>ctum D ipſi A propius puncto G ſublimius. </s>

<s id="id.2.1.1.39.1.8.0">quæ omnia demon<lb/>ſtrare oportebat. </s>

<s id="id.2.1.2.1.1.1.0"><margin.target id="note1"></margin.target>8. <emph type="italics"/>Tertil.<emph.end type="italics"/></s>

<margin.target id="note1"/>8. <emph type="italics"/>Tertil.<emph.end type="italics"/>

</s>

<s id="id.2.1.3.1.2.1.0">PROPOSITIO I. </s>

<s id="id.2.1.3.2.1.1.0">Si Pondus in eius centro grauitatis a recta ſu<lb/>ſtineatur linea, nunquam manebit, niſi eadem li<lb/>nea horizonti fuerit perpendicularis. </s>

<s id="id.2.1.3.2.1.1.0">Si Pondus in eius centro grauitatis a recta &longs;u<lb/>&longs;tineatur linea, nunquam manebit, ni&longs;i eadem li<lb/>nea horizonti fuerit perpendicularis. </s>

<s id="id.2.1.3.3.1.1.0">Sit pondus A, cuius centrum gra<lb/>uitatis B, quod à linea CE ſuſti<lb/>neatur. </s>

<s id="id.2.1.3.3.1.1.0">Sit pondus A, cuius centrum gra<lb/>uitatis B, quod à linea CE &longs;u&longs;ti<lb/>neatur. </s>

<s id="id.2.1.3.3.1.2.0">Dico pondus nunquam <lb/>permanſurum, niſi CB horizonti <lb/>perpendicularis exiſtat. </s>

<s id="id.2.1.3.3.1.2.0">Dico pondus nunquam <lb/>perman&longs;urum, ni&longs;i CB horizonti <lb/>perpendicularis exi&longs;tat. </s>

<s id="id.2.1.3.3.1.3.0">ſit pun<lb/>ctum C immobile, quod vt pon<lb/>dus ſuſtineatur, neceſſe eſt. </s>

<s id="id.2.1.3.3.1.3.0">&longs;it pun<lb/>ctum C immobile, quod vt pon<lb/>dus &longs;u&longs;tineatur, nece&longs;&longs;e e&longs;t. </s>

<s id="id.2.1.3.3.1.4.0">& cum <lb/>punctum C ſit immobile, ſi pon<lb/>dus A mouebitur, punctum B cir<lb/>culi circumferentiam deſcribet, <lb/>cuius ſemidiameter erit CB. qua<lb/>re centro C, ſpatio verò BC, cir<lb/>culus deſcribatur BFDE. </s>

<s id="id.2.1.3.3.1.4.0">& cum <lb/>punctum C &longs;it immobile, &longs;i pon<lb/>dus A mouebitur, punctum B cir<lb/>culi circumferentiam de&longs;cribet, <lb/>cuius &longs;emidiameter erit CB. qua<lb/>re centro C, &longs;patio verò BC, cir<lb/>culus de&longs;cribatur BFDE. </s>

<s id="id.2.1.3.3.1.4.0.a">&longs;itq; <lb/><figure id="id.036.01.019.1.jpg" xlink:href="036/01/019/1.jpg"></figure><lb/>primum BC horizonti perpendicularís, quæ v&longs;q; ad D produca<lb/>tur; atq; punctum C &longs;it infra punctum B. </s>

<s id="id.2.1.3.3.1.4.0.b">Quoniam enim pondus <arrow.to.target n="note2"></arrow.to.target><lb/>A &longs;ecundum grauitatis centrum B deor&longs;um mouetur; punctum <lb/>B deor&longs;um in centrum mundi, quò naturaliter tendit, per re<lb/>ctam lineam BD mouebitur: totum ergo pondus A eius cen<lb/>tro grauitatis B &longs;uper rectam lineam BC graue&longs;cet. </s>

<lb/>primum BC horizonti perpendicularís, quæ vſq; ad D produca<lb/>tur; atq; punctum C ſit infra punctum B. </s>

<s id="id.2.1.3.3.1.5.0">cum au<lb/>tem pondus à linea CB &longs;u&longs;tineatur, linea CB totum &longs;u&longs;ti<lb/>nebit pondus A; &longs;uper quam deor&longs;um moueri non pote&longs;t, cum <lb/>ab ip&longs;a prohibeatur: per definitionem igitur centri grauitatis pun<lb/>ctum B, pondu&longs;q; A in hoc &longs;itu manebunt. </s>

<s id="id.2.1.3.3.1.4.0.b">Quoniam enim pondus <arrow.to.target n="note2" xlink:type="simple"/>

<s id="id.2.1.3.3.1.6.0">& quamquam B quo<lb/>cunq; alio puncto circuli &longs;it &longs;ublimius, ab hoc tamen &longs;itu deor&longs;um <lb/>per circuli circumferentiam nequaquam mouebitur non enim ver<lb/>&longs;us F magis, quàm ver&longs;us E inclinabitur, cum ex vtraq; parte æqua<lb/>lis &longs;it de&longs;cen&longs;us; neq; pondus A in vnam magis, quàm in alteram <lb/>partem propen&longs;ionem habeat: quod non accidit in quouis alio <lb/>puncto circumferentiæ circuli (præter D) &longs;it ponderis eiu&longs;dem <pb xlink:href="036/01/020.jpg"/>centrum grauitatis, vt in F; cum ex <lb/>puncto F ver&longs;us D &longs;it de&longs;cen&longs;us, at <lb/>verò ver&longs;us B a&longs;cen&longs;us. </s>

<lb/>A ſecundum grauitatis centrum B deorſum mouetur; punctum <lb/>B deorſum in centrum mundi, quò naturaliter tendit, per re<lb/>ctam lineam BD mouebitur: totum ergo pondus A eius cen<lb/>tro grauitatis B ſuper rectam lineam BC graueſcet. </s>

<s id="id.2.1.3.3.1.7.0">quare pun<lb/>ctum F deor&longs;um mouebitur. </s>

<s id="id.2.1.3.3.1.5.0">cum au<lb/>tem pondus à linea CB ſuſtineatur, linea CB totum ſuſti<lb/>nebit pondus A; ſuper quam deorſum moueri non poteſt, cum <lb/>ab ipſa prohibeatur: per definitionem igitur centri grauitatis pun<lb/>ctum B, ponduſq; A in hoc ſitu manebunt. </s>

<s id="id.2.1.3.3.1.8.0">& quo<lb/>niam per rectam lineam in centrum <lb/>mundi moueri non pote&longs;t, cum à <lb/>puncto C immobili propter lineam <lb/>CF prohibeatur; deor&longs;um tamen <lb/>&longs;icuti eius natura po&longs;tulat, &longs;emper <lb/>mouebitur. </s>

<s id="id.2.1.3.3.1.6.0">& quamquam B quo<lb/>cunq; alio puncto circuli ſit ſublimius, ab hoc tamen ſitu deorſum <lb/>per circuli circumferentiam nequaquam mouebitur non enim ver<lb/>ſus F magis, quàm verſus E inclinabitur, cum ex vtraq; parte æqua<lb/>lis ſit deſcenſus; neq; pondus A in vnam magis, quàm in alteram <lb/>partem propenſionem habeat: quod non accidit in quouis alio <lb/>puncto circumferentiæ circuli (præter D) ſit ponderis eiuſdem <pb xlink:href="036/01/020.jpg" xlink:type="simple"/>centrum grauitatis, vt in F; cum ex <lb/>puncto F verſus D ſit deſcenſus, at <lb/>verò verſus B aſcenſus. </s>

<s id="id.2.1.3.3.1.9.0">& cum infimus locus &longs;it <lb/>D, per <expan abbr="circumferentiã">circumferentiam</expan> FD mouebi<lb/>tur, donec in D perueniat, in quo <lb/>&longs;itu manebit, <expan abbr="põdu&longs;q">pondu&longs;q</expan>; immobile exi <lb/><figure id="id.036.01.020.1.jpg" xlink:href="036/01/020/1.jpg"></figure><lb/>&longs;tet. </s>

<s id="id.2.1.3.3.1.7.0">quare pun<lb/>ctum F deorſum mouebitur. </s>

<s id="id.2.1.3.3.1.10.0">tum quia deor&longs;um amplius moueri non pote&longs;t, cum ex pun<lb/>cto C &longs;it appen&longs;um; tum etiam, quia in eius centro grauitatis &longs;u&longs;ti<lb/>netur. </s>

<s id="id.2.1.3.3.1.8.0">& quo<lb/>niam per rectam lineam in centrum <lb/>mundi moueri non poteſt, cum à <lb/>puncto C immobili propter lineam <lb/>CF prohibeatur; deorſum tamen <lb/>ſicuti eius natura poſtulat, ſemper <lb/>mouebitur. </s>

<s id="id.2.1.3.3.1.11.0">Quando autem F erit in D, erit quoq; linea FC in DC, <lb/>&longs;imulq; horizonti perpendicularis. </s>

<s id="id.2.1.3.3.1.9.0">& cum infimus locus ſit <lb/>D, per <expan abbr="circumferentiã">circumferentiam</expan> FD mouebi<lb/>tur, donec in D perueniat, in quo <lb/>ſitu manebit, <expan abbr="põduſq">ponduſq</expan>; immobile exi <lb/>

<s id="id.2.1.3.3.1.12.0">pondus ergo nunquam mane<lb/>bit, donec linea CF horizonti perpendicularis non exi&longs;tat. quod <lb/>o&longs;tendere oportebat. </s>

<s id="id.2.1.3.3.1.13.0">quod <lb/>o&longs;tendere oportebat. </s>

<s id="id.2.1.3.3.1.10.0">tum quia deorſum amplius moueri non poteſt, cum ex pun<lb/>cto C ſit appenſum; tum etiam, quia in eius centro grauitatis ſuſti<lb/>netur. </s>

<s id="id.2.1.3.3.1.11.0">Quando autem F erit in D, erit quoq; linea FC in DC, <lb/>ſimulq; horizonti perpendicularis. </s>

<s id="id.2.1.3.3.1.12.0">pondus ergo nunquam mane<lb/>bit, donec linea CF horizonti perpendicularis non exiſtat. quod <lb/>oſtendere oportebat. </s>

<s id="id.2.1.3.3.1.13.0">quod <lb/>oſtendere oportebat. </s>

<s id="id.2.1.4.1.1.1.0"><margin.target id="note2"></margin.target><emph type="italics"/>Supp.<emph.end type="italics"/> 3. <emph type="italics"/>huius.<emph.end type="italics"/></s>

<margin.target id="note2"/>

<emph type="italics"/>Supp.<emph.end type="italics"/> 3. <emph type="italics"/>huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.5.1.1.1.0">Ex hoc elici poteſt, pondus quocunq; modo <lb/>in dato puncto ſuſtineatur, nunquam manere; ni <lb/>ſi quando a centro grauitatis ponderis ad id pun<lb/>ctum ducta linea horizonti ſit perpendicularis. </s>

<s id="id.2.1.5.1.1.1.0">Ex hoc elici pote&longs;t, pondus quocunq; modo <lb/>in dato puncto &longs;u&longs;tineatur, nunquam manere; ni <lb/>&longs;i quando a centro grauitatis ponderis ad id pun<lb/>ctum ducta linea horizonti &longs;it perpendicularis. </s>

<s id="id.2.1.5.2.1.1.0">Vt iiſdem poſitis, ſuſtineatur <lb/>pondus à lineis CG CH. </s>

<s id="id.2.1.5.2.1.1.0">Vt ii&longs;dem po&longs;itis, &longs;u&longs;tineatur <lb/>pondus à lineis CG CH. </s>

<s id="id.2.1.5.2.1.1.0.a">Dico <lb/>ſi ducta BC horizonti ſit perpen<lb/>dicularis, pondus A manere. </s>

<s id="id.2.1.5.2.1.1.0.a">Dico <lb/>&longs;i ducta BC horizonti &longs;it perpen<lb/>dicularis, pondus A manere. </s>

<s id="id.2.1.5.2.1.2.0">ſi verò <lb/>ducta CF non ſit horizonti per<lb/>pendicularis, punctum F deorſum <lb/>vſq; ad D moueri; in quo ſitu pon<lb/>dus manebit, ductaq; CD horizon<lb/>ti perpendicularis exiſtet. </s>

<s id="id.2.1.5.2.1.2.0">&longs;i verò <lb/>ducta CF non &longs;it horizonti per<lb/>pendicularis, punctum F deor&longs;um <lb/>v&longs;q; ad D moueri; in quo &longs;itu pon<lb/>dus manebit, ductaq; CD horizon<lb/>ti perpendicularis exi&longs;tet. </s>

<s id="id.2.1.5.2.1.3.0">quæ om<lb/>nia eadem ratione oſtendentur. <figure id="id.036.01.020.2.jpg" place="text" xlink:href="036/01/020/2.jpg" xlink:type="simple"/>

<s id="id.2.1.5.2.1.3.0">quæ om<lb/>nia eadem ratione o&longs;tendentur. <figure id="id.036.01.020.2.jpg" xlink:href="036/01/020/2.jpg"></figure></s>

</s>

<s id="id.2.1.5.2.3.1.0">PROPOSITIO II. </s>

<s id="id.2.1.5.3.1.1.0">Libra horizonti æquidiſtans, cuius centrum <lb/>ſit ſupra libram, æqualia in extremitatibus, æqua <lb/>literq; à perpendiculo diſtantia habens pondera, <lb/>ſi ab eiuſmodi moueatur ſitu, in eundem rurſus <lb/>relicta, redibit; ibíq; manebit. </s>

<s id="id.2.1.5.3.1.1.0">Libra horizonti æquidi&longs;tans, cuius centrum <lb/>&longs;it &longs;upra libram, æqualia in extremitatibus, æqua <lb/>literq; à perpendiculo di&longs;tantia habens pondera, <lb/>&longs;i ab eiu&longs;modi moueatur &longs;itu, in eundem rur&longs;us <lb/>relicta, redibit; ibíq; manebit. </s>

<s id="id.2.1.5.4.1.1.0">Sit libra AB recta li<lb/>nea horizonti æquidi<lb/>ſtans, cuius centrum C <lb/>ſit ſupra libram; ſitq; CD <lb/>

<s id="id.2.1.5.4.1.1.0">Sit libra AB recta li<lb/>nea horizonti æquidi<lb/>&longs;tans, cuius centrum C <lb/>&longs;it &longs;upra libram; &longs;itq; CD <lb/><expan abbr="perpendicul&utilde;">perpendiculum</expan>, quod ho<lb/>rizonti perpendiculare <lb/>erit: atq; di&longs;tantia DA &longs;it <lb/>di&longs;tantiæ DB æqualis; <lb/>&longs;intq; in AB pondera æ<lb/>qualia, <expan abbr="quor&utilde;">quorum</expan> grauitatis <lb/>centra &longs;int in AB <expan abbr="p&utilde;ctis">punctis</expan>. </s>

<expan abbr="perpendiculũ">perpendiculum</expan>, quod ho<lb/>rizonti perpendiculare <lb/>erit: atq; diſtantia DA ſit <lb/>diſtantiæ DB æqualis; <lb/>ſintq; in AB pondera æ<lb/>qualia, <expan abbr="quorũ">quorum</expan> grauitatis <lb/>centra ſint in AB <expan abbr="pũctis">punctis</expan>. </s>

<s id="id.2.1.5.4.1.2.0"><lb/>Moueatur AB libra ab <lb/><figure id="id.036.01.021.1.jpg" xlink:href="036/01/021/1.jpg"></figure><lb/>hoc &longs;itu, putá in EF, deinde relinquatur. </s>

<s id="id.2.1.5.4.1.3.0">dico libram EF in AB ho<lb/>rizonti æquidi&longs;tantem redire, ibíq; manere. </s>

<lb/>Moueatur AB libra ab <lb/>

<s id="id.2.1.5.4.1.4.0">Quoniam autem pun<lb/>ctum C e&longs;t immobile, dum libra mouetur, punctum D circuli cir<lb/>cumferentiam de&longs;cribet, cuius &longs;emidiameter erit CD. quare cen<lb/>tro C, &longs;patio verò CD, circulus de&longs;cribatur DGH. </s>

<s id="id.2.1.5.4.1.4.0.a">Quoniam <lb/>enim CD ip&longs;i libræ &longs;emper e&longs;t perpendicularis, dum libra erit in <lb/>EF, linea CD erit in CG, ita vt CG &longs;it ip&longs;i EF perpendicula<lb/>ris. </s>

<lb/>hoc ſitu, putá in EF, deinde relinquatur. </s>

<s id="id.2.1.5.4.1.5.0">Cùm autem AB bifariam à puncto D diuidatur, & pondera <lb/>in AB &longs;int æqualia; erit magnitudinis ex ip&longs;is AB compo&longs;itæ cen<arrow.to.target n="note3"></arrow.to.target><lb/>trum grauitatis in medio, hoc e&longs;t in D. & <expan abbr="quãdo">quando</expan> libra vná cum pon<lb/>deribus erit in EF; erit magnitudinis ex vtri&longs;q; EF compo&longs;itæ cen<lb/>trum grauitatis G. </s>

<s id="id.2.1.5.4.1.3.0">dico libram EF in AB ho<lb/>rizonti æquidiſtantem redire, ibíq; manere. </s>

<s id="id.2.1.5.4.1.5.0.a">& quoniam CG horizonti non e&longs;t perpendi<lb/>cularis; <arrow.to.target n="note4"></arrow.to.target>magnitudo ex ponderibus EF compo&longs;ita in hoc &longs;itu mi<lb/>nimè per&longs;i&longs;tet, &longs;ed deor&longs;um <expan abbr="&longs;ec&utilde;dùm">&longs;ecundùm</expan> eius centrum grauitatis G per <lb/>circumferentiam GD mouebitur; donec CG horizonti fiat per<pb xlink:href="036/01/022.jpg"/>pendicularis, &longs;cilicet do<lb/>nec CG in CD redeat. </s>

<s id="id.2.1.5.4.1.4.0">Quoniam autem pun<lb/>ctum C eſt immobile, dum libra mouetur, punctum D circuli cir<lb/>cumferentiam deſcribet, cuius ſemidiameter erit CD. quare cen<lb/>tro C, ſpatio verò CD, circulus deſcribatur DGH. </s>

<s id="id.2.1.5.4.1.6.0"><lb/>Quando autem CG erit <lb/>in CD, linea EF, cùm <lb/>ip&longs;i CG &longs;emper ad rectos <lb/>&longs;it angulos, erit in AB; in <lb/><arrow.to.target n="note5"></arrow.to.target>quo &longs;itu quoq; manebit. </s>

<s id="id.2.1.5.4.1.4.0.a">Quoniam <lb/>enim CD ipſi libræ ſemper eſt perpendicularis, dum libra erit in <lb/>EF, linea CD erit in CG, ita vt CG ſit ipſi EF perpendicula<lb/>ris. </s>

<s id="id.2.1.5.4.1.7.0">li<lb/>bra ergo EF in AB hori<lb/>zonti <expan abbr="æquidi&longs;tãtem">æquidi&longs;tantem</expan> redi<lb/>bit, ibíq; manebit. </s>

<s id="id.2.1.5.4.1.5.0">Cùm autem AB bifariam à puncto D diuidatur, & pondera <lb/>in AB ſint æqualia; erit magnitudinis ex ipſis AB compoſitæ cen<arrow.to.target n="note3" xlink:type="simple"/>

<s id="id.2.1.5.4.1.8.0">quod <lb/>demon&longs;trare oportebat. </s>

<lb/>trum grauitatis in medio, hoc eſt in D. & <expan abbr="quãdo">quando</expan> libra vná cum pon<lb/>deribus erit in EF; erit magnitudinis ex vtriſq; EF compoſitæ cen<lb/>trum grauitatis G. </s>

<s id="id.2.1.5.4.1.5.0.a">& quoniam CG horizonti non eſt perpendi<lb/>cularis; <arrow.to.target n="note4" xlink:type="simple"/>magnitudo ex ponderibus EF compoſita in hoc ſitu mi<lb/>nimè perſiſtet, ſed deorſum <expan abbr="ſecũdùm">ſecundùm</expan> eius centrum grauitatis G per <lb/>circumferentiam GD mouebitur; donec CG horizonti fiat per<pb xlink:href="036/01/022.jpg" xlink:type="simple"/>pendicularis, ſcilicet do<lb/>nec CG in CD redeat. </s>

<lb/>Quando autem CG erit <lb/>in CD, linea EF, cùm <lb/>ipſi CG ſemper ad rectos <lb/>ſit angulos, erit in AB; in <lb/>

<arrow.to.target n="note5" xlink:type="simple"/>quo ſitu quoq; manebit. </s>

<s id="id.2.1.5.4.1.7.0">li<lb/>bra ergo EF in AB hori<lb/>zonti <expan abbr="æquidiſtãtem">æquidiſtantem</expan> redi<lb/>bit, ibíq; manebit. </s>

<s id="id.2.1.5.4.1.8.0">quod <lb/>demonſtrare oportebat. </s>

<s id="id.2.1.6.1.1.1.0"><margin.target id="note3"></margin.target>4. <emph type="italics"/>primi Archi<lb/>medis de <lb/>æqueponde<lb/>rantibus.<emph.end type="italics"/></s>

<margin.target id="note3"/>4. <emph type="italics"/>primi Archi<lb/>medis de <lb/>æqueponde<lb/>rantibus.<emph.end type="italics"/>

<s id="id.2.1.6.1.1.2.0"><margin.target id="note4"></margin.target>1. <emph type="italics"/>Huius<emph.end type="italics"/></s>

</s>

<s id="id.2.1.6.1.1.3.0"><margin.target id="note5"></margin.target>1. <emph type="italics"/>Huius.<emph.end type="italics"/></s>

<margin.target id="note4"/>1. <emph type="italics"/>Huius<emph.end type="italics"/>

</s>

</figure>

<margin.target id="note5"/>1. <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.7.1.3.1.0">PROPOSITIO III. </s>

<s id="id.2.1.7.2.1.1.0">Libra horizonti æquidiſtans æqualia in extre<lb/>mitatibus, æqualiterq; à perpendiculo diſtan<lb/>tia habens pondera, centro infernè collocato, in <lb/>hoc ſitu manebit. </s>

<s id="id.2.1.7.2.1.1.0">Libra horizonti æquidi&longs;tans æqualia in extre<lb/>mitatibus, æqualiterq; à perpendiculo di&longs;tan<lb/>tia habens pondera, centro infernè collocato, in <lb/>hoc &longs;itu manebit. </s>

<s id="id.2.1.7.2.1.2.0">ſi verò inde moueatur, deor<lb/>ſum relicta, ſecundùm partem decliuiorem mo<lb/>uebitur. <figure id="id.036.01.022.2.jpg" place="text" xlink:href="036/01/022/2.jpg" xlink:type="simple"/>

<s id="id.2.1.7.2.1.2.0">&longs;i verò inde moueatur, deor<lb/>&longs;um relicta, &longs;ecundùm partem decliuiorem mo<lb/>uebitur. <figure id="id.036.01.022.2.jpg" xlink:href="036/01/022/2.jpg"></figure></s>

</s>

<s id="id.2.1.7.3.1.1.0">Sit libra AB rectá li<lb/>nea horizonti æquidi<lb/>ſtans, cuius centrum C <lb/>ſit infra libram; perpen<lb/>diculumq; ſit CD, quod <lb/>horizonti perpendiculare <lb/>erit; & diſtantia AD ſit <lb/>diſtantiæ DB æqualis; <lb/>ſintq; in AB pondera <lb/>æqualia, quorum grauita<lb/>tis centra ſint in punctis <lb/>AB. </s>

<s id="id.2.1.7.3.1.1.0">Sit libra AB rectá li<lb/>nea horizonti æquidi<lb/>&longs;tans, cuius centrum C <lb/>&longs;it infra libram; perpen<lb/>diculumq; &longs;it CD, quod <lb/>horizonti perpendiculare <lb/>erit; & di&longs;tantia AD &longs;it <lb/>di&longs;tantiæ DB æqualis; <lb/>&longs;intq; in AB pondera <lb/>æqualia, quorum grauita<lb/>tis centra &longs;int in punctis <lb/>AB. </s>

<s id="id.2.1.7.3.1.1.0.a">Dico primùm libram AB in hoc ſitu manere. </s>

<s id="id.2.1.7.3.1.1.0.a">Dico primùm libram AB in hoc &longs;itu manere. </s>

<s id="id.2.1.7.3.1.2.0">Quoniam <lb/>enim AB bifariam diuiditur à puncto D, & pondera in AB ſunt <lb/>æqualia; erit punctum D centrum grauitatis magnitudinis ex <pb n="5" xlink:href="036/01/023.jpg" xlink:type="simple"/>vtriſq; AB ponderibus compoſitæ. </s>

<s id="id.2.1.7.3.1.2.0">Quoniam <lb/>enim AB bifariam diuiditur à puncto D, & pondera in AB &longs;unt <lb/>æqualia; erit punctum D centrum grauitatis magnitudinis ex <pb n="5" xlink:href="036/01/023.jpg"/>vtri&longs;q; AB ponderibus compo&longs;itæ. </s>

<s id="id.2.1.7.3.1.3.0">& CD libram ſuſtinens ho<lb/>rizonti <arrow.to.target n="note6" xlink:type="simple"/>eſt perpendicularis, libra ergo AB in hoc ſitu manebit. <arrow.to.target n="note7" xlink:type="simple"/>

<s id="id.2.1.7.3.1.3.0">& CD libram &longs;u&longs;tinens ho<lb/>rizonti <arrow.to.target n="note6"></arrow.to.target>e&longs;t perpendicularis, libra ergo AB in hoc &longs;itu manebit. <arrow.to.target n="note7"></arrow.to.target><lb/>moueatur autem libra AB ab hoc &longs;itu, putà in EF, deinde relinqua<lb/>tur. </s>

<lb/>moueatur autem libra AB ab hoc ſitu, putà in EF, deinde relinqua<lb/>tur. </s>

<s id="id.2.1.7.3.1.4.0">dico libram EF ex parte F moueri. </s>

<s id="id.2.1.7.3.1.5.0">Quoniam igitur CD <lb/>ipſi libræ ſemper eſt perpendicularis, dum libra erit in EF, erit <lb/>CD in CG ipſi EF perpendicularis. </s>

<s id="id.2.1.7.3.1.5.0">Quoniam igitur CD <lb/>ip&longs;i libræ &longs;emper e&longs;t perpendicularis, dum libra erit in EF, erit <lb/>CD in CG ip&longs;i EF perpendicularis. </s>

<s id="id.2.1.7.3.1.6.0">& punctum G magnitudi<lb/>nis ex EF compoſitæ centrum grauitatis erit; quod dum moue<lb/>tur, circuli circumferentiam deſcribet DGH, cuius ſemidiameter <lb/>CD, & centrum C. </s>

<s id="id.2.1.7.3.1.6.0">& punctum G magnitudi<lb/>nis ex EF compo&longs;itæ centrum grauitatis erit; quod dum moue<lb/>tur, circuli circumferentiam de&longs;cribet DGH, cuius &longs;emidiameter <lb/>CD, & centrum C. </s>

<s id="id.2.1.7.3.1.6.0.a">Quoniam autem CG horizonti non eſt per<lb/>pendicularis, magnitudo ex EF ponderibus compoſita in hoc ſi<lb/>tu minimè manebit; ſed ſecundùm eius grauitatis centrum G deor<lb/>ſum per circumferentiam GH mouebitur. </s>

<s id="id.2.1.7.3.1.6.0.a">Quoniam autem CG horizonti non e&longs;t per<lb/>pendicularis, magnitudo ex EF ponderibus compo&longs;ita in hoc &longs;i<lb/>tu minimè manebit; &longs;ed &longs;ecundùm eius grauitatis centrum G deor<lb/>&longs;um per circumferentiam GH mouebitur. </s>

<s id="id.2.1.7.3.1.7.0">libra ergo EF ex par <lb/>te F deorſum mouebitur, quod demonſtrare oportebat. </s>

<s id="id.2.1.7.3.1.7.0">libra ergo EF ex par <lb/>te F deor&longs;um mouebitur, quod demon&longs;trare oportebat. </s>

<s id="id.2.1.8.1.1.1.0"><margin.target id="note6"></margin.target>4. <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<margin.target id="note6"/>4. <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

<s id="id.2.1.8.1.1.3.0"><margin.target id="note7"></margin.target>1. <emph type="italics"/>Huius.<emph.end type="italics"/></s>

</s>

<margin.target id="note7"/>1. <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.9.1.1.1.0">PROPOSITIO IIII. </s>

<s id="id.2.1.9.2.1.1.0">Libra horizonti æquidiſtans æqualia in ex<lb/>tremitatibus, æqualiterq; à centro in ipſa libra <lb/>collocato, diſtantia habens pondera; ſiue inde <lb/>moueatur, ſiue minus; vbicunq; relicta, manebit. <figure id="id.036.01.023.1.jpg" place="text" xlink:href="036/01/023/1.jpg" xlink:type="simple"/>

<s id="id.2.1.9.2.1.1.0">Libra horizonti æquidi&longs;tans æqualia in ex<lb/>tremitatibus, æqualiterq; à centro in ip&longs;a libra <lb/>collocato, di&longs;tantia habens pondera; &longs;iue inde <lb/>moueatur, &longs;iue minus; vbicunq; relicta, manebit. <figure id="id.036.01.023.1.jpg" xlink:href="036/01/023/1.jpg"></figure></s>

</s>

<s id="id.2.1.9.3.1.1.0">Sit libra recta linea A <lb/>B horizonti æquidiſtans, <lb/>cuius centrum C in ea<lb/>dem ſit linea AB; diſtan<lb/>tia verò CA ſit diſtantiæ <lb/>CB æqualis: ſintq; pon<lb/>dera in AB æqualia, quo<lb/>rum centra grauitatis ſint <lb/>in <expan abbr="puntis">punctis</expan> AB. </s>

<s id="id.2.1.9.3.1.1.0">Sit libra recta linea A <lb/>B horizonti æquidi&longs;tans, <lb/>cuius centrum C in ea<lb/>dem &longs;it linea AB; di&longs;tan<lb/>tia verò CA &longs;it di&longs;tantiæ <lb/>CB æqualis: &longs;intq; pon<lb/>dera in AB æqualia, quo<lb/>rum centra grauitatis &longs;int <lb/>in <expan abbr="puntis">punctis</expan> AB. </s>

<s id="id.2.1.9.3.1.1.0.a">Moueatur <lb/>libra, vt in DE, ibiquè <lb/>relinquatur. </s>

<s id="id.2.1.9.3.1.2.0">Dico primùm libram DE non moueri, in eoquè ſitu <lb/>manere. </s>

<s id="id.2.1.9.3.1.2.0">Dico primùm libram DE non moueri, in eoquè &longs;itu <lb/>manere. </s>

<s id="id.2.1.9.3.1.3.0">Quoniam enim pondera AB ſunt æqualia; erit magni<lb/>tudinis ex vtroq; pondere, videlicet A, & B compoſitæ centrum <lb/>grauitatis C. quare idem punctum C, & centrum libræ, & <expan abbr="centrũ">centrum</expan>

<s id="id.2.1.9.3.1.3.0">Quoniam enim pondera AB &longs;unt æqualia; erit magni<lb/>tudinis ex vtroq; pondere, videlicet A, & B compo&longs;itæ centrum <lb/>grauitatis C. quare idem punctum C, & centrum libræ, & <expan abbr="centr&utilde;">centrum</expan><lb/> grauitatis totius ponderis erit. </s>

<lb/> grauitatis totius ponderis erit. </s>

<s id="id.2.1.9.3.1.4.0">Quoniam autem centrum libræ <pb xlink:href="036/01/024.jpg"/>C, dum libra AB vnà <lb/>cum ponderibus in DE <lb/>mouetur, immobile re<lb/>manet, centrum quoq; <lb/>grauitatis, quod e&longs;t idem <lb/>C, non mouebitur. </s>

<s id="id.2.1.9.3.1.4.0">Quoniam autem centrum libræ <pb xlink:href="036/01/024.jpg" xlink:type="simple"/>C, dum libra AB vnà <lb/>cum ponderibus in DE <lb/>mouetur, immobile re<lb/>manet, centrum quoq; <lb/>grauitatis, quod eſt idem <lb/>C, non mouebitur. </s>

<s id="id.2.1.9.3.1.5.0">nec <lb/>igitur libra DE mouebi<lb/>tur, per definitionem <lb/>centri grauitatis, cum in <lb/>ip&longs;o &longs;u&longs;pendatur. </s>

<s id="id.2.1.9.3.1.5.0">nec <lb/>igitur libra DE mouebi<lb/>tur, per definitionem <lb/>centri grauitatis, cum in <lb/>ipſo ſuſpendatur. </s>

<s id="id.2.1.9.3.1.6.0">Idip<lb/><figure id="id.036.01.024.1.jpg" xlink:href="036/01/024/1.jpg"></figure><lb/>&longs;um quoq; contingit libra in AB horizonti æquidi&longs;tante, vel in <lb/>quocunq; alio &longs;itu exi&longs;tente. </s>

<s id="id.2.1.9.3.1.7.0">Manebit ergo libra, vbi relinque<lb/>tur. </s>

<s id="id.2.1.9.3.1.8.0">quod demon&longs;trare oportebat. </s>

<lb/>ſum quoq; contingit libra in AB horizonti æquidiſtante, vel in <lb/>quocunq; alio ſitu exiſtente. </s>

<s id="id.2.1.9.3.1.7.0">Manebit ergo libra, vbi relinque<lb/>tur. </s>

<s id="id.2.1.9.3.1.8.0">quod demonſtrare oportebat. </s>

<s id="id.2.1.9.4.1.1.0">Cum verò in iis, quæ dicta ſunt, grauitatis tantùm magnitudi<lb/>num, quæ in extremitatibus libræ poſitæ ſunt æquales, abſq; lí<lb/>bræ grauitate conſiderauerimus; quoniam tamen adhuc libræ bra<lb/>chia ſunt æqualia, idcirco idem libræ, eius grauitate conſiderata, <lb/>vnà cum ponderibus, vel ſine ponderibus eueniet. </s>

<s id="id.2.1.9.4.1.1.0">Cum verò in iis, quæ dicta &longs;unt, grauitatis tantùm magnitudi<lb/>num, quæ in extremitatibus libræ po&longs;itæ &longs;unt æquales, ab&longs;q; lí<lb/>bræ grauitate con&longs;iderauerimus; quoniam tamen adhuc libræ bra<lb/>chia &longs;unt æqualia, idcirco idem libræ, eius grauitate con&longs;iderata, <lb/>vnà cum ponderibus, vel &longs;ine ponderibus eueniet. </s>

<s id="id.2.1.9.4.1.2.0">idem enim cen<lb/>trum grauitatis fine ponderibus libræ tantùm grauitatis centrum <lb/>erit. </s>

<s id="id.2.1.9.4.1.3.0">Similiter ſi pondera in libræ extremitatibus appendantur, vt <lb/>fieri ſolet, idem eueniet; dummodo ex ſuſpenſionum punctis ad <lb/>centra grauitatum ponderum ductæ lineæ (quocunq; modo mo<lb/>ueatur libra) ſi protrahantur, in centrum mundi concurrant. </s>

<s id="id.2.1.9.4.1.3.0">Similiter &longs;i pondera in libræ extremitatibus appendantur, vt <lb/>fieri &longs;olet, idem eueniet; dummodo ex &longs;u&longs;pen&longs;ionum punctis ad <lb/>centra grauitatum ponderum ductæ lineæ (quocunq; modo mo<lb/>ueatur libra) &longs;i protrahantur, in centrum mundi concurrant. </s>

<s id="id.2.1.9.4.1.4.0">vbi <lb/>enim pondera hoc modo ſunt appenſa, ibi graueſcunt, ac ſi in iiſ<lb/>dem punctis centra grauitatum haberent. </s>

<s id="id.2.1.9.4.1.4.0">vbi <lb/>enim pondera hoc modo &longs;unt appen&longs;a, ibi graue&longs;cunt, ac &longs;i in ii&longs;<lb/>dem punctis centra grauitatum haberent. </s>

<s id="id.2.1.9.4.1.5.0">præterea, quæ ſequun<lb/>tur, eodem prorſus modo conſiderare poterimus. </s>

<s id="id.2.1.9.4.1.5.0">præterea, quæ &longs;equun<lb/>tur, eodem pror&longs;us modo con&longs;iderare poterimus. </s>

<s id="id.2.1.9.5.1.1.0"><arrow.to.target n="note8"></arrow.to.target>Quoniam autem huic determinationi vltimæ multa à nonnullis <lb/>aliter &longs;entientibus dicta officere videntur; idcirco in hac parte ali<lb/><arrow.to.target n="note9"></arrow.to.target>quantulum immorari oportebit; & pro viribus, non &longs;olum pro<lb/>priam &longs;ententiam, &longs;ed Archimedem ip&longs;um, qui in hac eadem e&longs;&longs;e <lb/><arrow.to.target n="note10"></arrow.to.target>&longs;ententia videtur, defendere conabor. <pb n="6" xlink:href="036/01/025.jpg"/><figure id="id.036.01.025.1.jpg" xlink:href="036/01/025/1.jpg"></figure></s>

<arrow.to.target n="note8" xlink:type="simple"/>Quoniam autem huic determinationi vltimæ multa à nonnullis <lb/>aliter ſentientibus dicta officere videntur; idcirco in hac parte ali<lb/>

<arrow.to.target n="note9" xlink:type="simple"/>quantulum immorari oportebit; & pro viribus, non ſolum pro<lb/>priam ſententiam, ſed Archimedem ipſum, qui in hac eadem eſſe <lb/>

<arrow.to.target n="note10" xlink:type="simple"/>ſententia videtur, defendere conabor. <pb n="6" xlink:href="036/01/025.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.9.6.1.1.0">Iiſdem poſitis, duca<lb/>tur FCG ipſi AB, & <lb/>horizonti perpendicula<lb/>ris; & centro C, ſpatio<lb/>què CA, circulus deſcri<lb/>batur ADFBEG. erunt <lb/>puncta ADBE in circu<lb/>li circumferentia; cum li<lb/>bræ brachia ſint æqualia. </s>

<s id="id.2.1.9.6.1.1.0">Ii&longs;dem po&longs;itis, duca<lb/>tur FCG ip&longs;i AB, & <lb/>horizonti perpendicula<lb/>ris; & centro C, &longs;patio<lb/>què CA, circulus de&longs;cri<lb/>batur ADFBEG. erunt <lb/>puncta ADBE in circu<lb/>li circumferentia; cum li<lb/>bræ brachia &longs;int æqualia. </s>

<s id="id.2.1.9.6.1.2.0"><lb/>& quoniam in vnam con<lb/>ueniunt &longs;ententiam, a&longs;&longs;e<lb/>rentes &longs;cilicet libram DE <lb/>neq; in FG moueri, ne<lb/>que in DE manere, &longs;ed in AB horizonti æquidi&longs;tantem rediré. </s>

<lb/>& quoniam in vnam con<lb/>ueniunt ſententiam, aſſe<lb/>rentes ſcilicet libram DE <lb/>neq; in FG moueri, ne<lb/>que in DE manere, ſed in AB horizonti æquidiſtantem rediré. </s>

<s id="id.2.1.9.6.1.3.0"><lb/>hanc eorum &longs;ententiam nullo modo con&longs;i&longs;tere po&longs;&longs;e o&longs;tendam. </s>

<s id="id.2.1.9.6.1.4.0"><lb/>Non enim, &longs;ed &longs;i quod aiunt, euenerit, vel ideo erit, quia pondus <lb/>D pondere E grauius fuerit, vel &longs;i pondera &longs;unt æqualia, di&longs;tantiæ, <lb/>quibus &longs;unt po&longs;ita, non erunt æquales, hoc e&longs;t CD ip&longs;i CE non erit <lb/>æqualis, &longs;ed maior. </s>

<lb/>hanc eorum ſententiam nullo modo conſiſtere poſſe oſtendam. </s>

<s id="id.2.1.9.6.1.5.0">Quòd autem pondera in DE &longs;int æqualia, & <lb/>di&longs;tantia CD &longs;it æqualis di&longs;tantiæ CE: hæc ex &longs;uppo&longs;itione pa<lb/>tent. </s>

<s id="id.2.1.9.6.1.6.0">Sed quoniam dicunt pondus in D in eo &longs;itu pondere in E <lb/>grauius e&longs;&longs;e in altero &longs;itu deor&longs;um: dum pondera &longs;unt in DE, pun<lb/>ctum C non erit amplius centrum grauitatis, nam non manent, &longs;i <lb/>ex C &longs;u&longs;pendantur; &longs;ed erit in linea CD, ex tertia primi Archi<lb/>medis de æqueponderantibus. </s>

<lb/>Non enim, ſed ſi quod aiunt, euenerit, vel ideo erit, quia pondus <lb/>D pondere E grauius fuerit, vel ſi pondera ſunt æqualia, diſtantiæ, <lb/>quibus ſunt poſita, non erunt æquales, hoc eſt CD ipſi CE non erit <lb/>æqualis, ſed maior. </s>

<s id="id.2.1.9.6.1.7.0">non autem erit in linea CE, cum pon<lb/>dus D grauius &longs;it pondere E. &longs;it igitur in H, in quo &longs;i &longs;u&longs;pendan<lb/>tur, manebunt. </s>

<s id="id.2.1.9.6.1.5.0">Quòd autem pondera in DE ſint æqualia, & <lb/>diſtantia CD ſit æqualis diſtantiæ CE: hæc ex ſuppoſitione pa<lb/>tent. </s>

<s id="id.2.1.9.6.1.8.0">Quoniam autem centrum grauitatis ponderum <lb/>in AB connexorum e&longs;t punctum C; ponderum verò in DE e&longs;t <lb/>punctum H: dum igitur pondera AB mouentur in DE, centrum <lb/>grauitatis C ver&longs;us D mouebitur, & ad D propius accedet; quod <lb/>e&longs;t impo&longs;sibile: cum pondera eandem inter &longs;e &longs;e &longs;eruent di&longs;tantiam. </s>

<s id="id.2.1.9.6.1.6.0">Sed quoniam dicunt pondus in D in eo ſitu pondere in E <lb/>grauius eſſe in altero ſitu deorſum: dum pondera ſunt in DE, pun<lb/>ctum C non erit amplius centrum grauitatis, nam non manent, ſi <lb/>ex C ſuſpendantur; ſed erit in linea CD, ex tertia primi Archi<lb/>medis de æqueponderantibus. </s>

<s id="id.2.1.9.6.1.9.0"><lb/>Vniu&longs;cuiu&longs;q; enim corporis centrum grauitatis in eodem &longs;emper <arrow.to.target n="note11"></arrow.to.target><lb/>e&longs;t &longs;itu re&longs;pectu &longs;ui corporis. </s>

<s id="id.2.1.9.6.1.7.0">non autem erit in linea CE, cum pon<lb/>dus D grauius ſit pondere E. ſit igitur in H, in quo ſi ſuſpendan<lb/>tur, manebunt. </s>

<s id="id.2.1.9.6.1.10.0">& quamquam punctum C &longs;it duo<lb/>rum corporum AB centrum grauitatis, quia tamen inter &longs;e &longs;e ita à <lb/>libra connexa &longs;unt, vt &longs;emper eodem modo &longs;e &longs;e habeant; Ideo <lb/>punctum C ita eorum erit centrum grauitatis, ac &longs;i vna tantum <pb xlink:href="036/01/026.jpg"/><arrow.to.target n="note12"></arrow.to.target>e&longs;&longs;et magnitudo. </s>

<s id="id.2.1.9.6.1.8.0">Quoniam autem centrum grauitatis ponderum <lb/>in AB connexorum eſt punctum C; ponderum verò in DE eſt <lb/>punctum H: dum igitur pondera AB mouentur in DE, centrum <lb/>grauitatis C verſus D mouebitur, & ad D propius accedet; quod <lb/>eſt impoſsibile: cum pondera eandem inter ſe ſe ſeruent diſtantiam. </s>

<s id="id.2.1.9.6.1.11.0">libra <lb/>enim vna cum ponderi<lb/>bus vnum tantum conti<lb/>nuum efficit, cuius cen<lb/>trum grauitatis erit &longs;em<lb/>per in medio. </s>

<s id="id.2.1.9.6.1.12.0">non igitur <lb/>pondus in D pondere in <lb/>E e&longs;t grauius. </s>

<lb/>Vniuſcuiuſq; enim corporis centrum grauitatis in eodem ſemper <arrow.to.target n="note11" xlink:type="simple"/>

<s id="id.2.1.9.6.1.13.0">Si autem <lb/>dicerent centrum graui<lb/>tatis non in linea CD, <lb/>&longs;ed in CE e&longs;&longs;e debere; <lb/>idem eueniet ab&longs;urdum. <figure id="id.036.01.026.1.jpg" xlink:href="036/01/026/1.jpg"></figure></s>

<lb/>eſt ſitu reſpectu ſui corporis. </s>

<s id="id.2.1.9.6.1.10.0">& quamquam punctum C ſit duo<lb/>rum corporum AB centrum grauitatis, quia tamen inter ſe ſe ita à <lb/>libra connexa ſunt, vt ſemper eodem modo ſe ſe habeant; Ideo <lb/>punctum C ita eorum erit centrum grauitatis, ac ſi vna tantum <pb xlink:href="036/01/026.jpg" xlink:type="simple"/>

<arrow.to.target n="note12" xlink:type="simple"/>eſſet magnitudo. </s>

<s id="id.2.1.9.6.1.11.0">libra <lb/>enim vna cum ponderi<lb/>bus vnum tantum conti<lb/>nuum efficit, cuius cen<lb/>trum grauitatis erit ſem<lb/>per in medio. </s>

<s id="id.2.1.9.6.1.12.0">non igitur <lb/>pondus in D pondere in <lb/>E eſt grauius. </s>

<s id="id.2.1.9.6.1.13.0">Si autem <lb/>dicerent centrum graui<lb/>tatis non in linea CD, <lb/>ſed in CE eſſe debere; <lb/>idem eueniet abſurdum. <figure id="id.036.01.026.1.jpg" place="text" xlink:href="036/01/026/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.9.7.1.1.0">Amplius ſi pondus D <lb/>deorſum mouebitur, pondus E ſurſum mouebit. </s>

<s id="id.2.1.9.7.1.1.0">Amplius &longs;i pondus D <lb/>deor&longs;um mouebitur, pondus E &longs;ur&longs;um mouebit. </s>

<s id="id.2.1.9.7.1.2.0">pondus igitur gra<lb/>uius, quàm ſit E, in eodemmet ſitu ponderi D æqueponderabit, & <lb/>grauia inæqualia æquali diſtantia poſita æqueponderabunt. </s>

<s id="id.2.1.9.7.1.2.0">pondus igitur gra<lb/>uius, quàm &longs;it E, in eodemmet &longs;itu ponderi D æqueponderabit, & <lb/>grauia inæqualia æquali di&longs;tantia po&longs;ita æqueponderabunt. </s>

<s id="id.2.1.9.7.1.3.0">Adii<lb/>ciatur ergo ponderi E aliquod graue, ita vt ipſi D contraponde<lb/>ret, ſi ex C ſuſpendantur. </s>

<s id="id.2.1.9.7.1.3.0">Adii<lb/>ciatur ergo ponderi E aliquod graue, ita vt ip&longs;i D contraponde<lb/>ret, &longs;i ex C &longs;u&longs;pendantur. </s>

<s id="id.2.1.9.7.1.4.0">ſed cum ſupra oſtenſum ſit punctum C <lb/>centrum eſſe grauitatis æqualium ponderum in DE; ſi igitur pon<lb/>

<s id="id.2.1.9.7.1.4.0">&longs;ed cum &longs;upra o&longs;ten&longs;um &longs;it punctum C <lb/>centrum e&longs;&longs;e grauitatis æqualium ponderum in DE; &longs;i igitur pon<lb/><arrow.to.target n="note13"></arrow.to.target>dus E grauius fuerit pondere D, erit centrum grauitatis in linea <lb/>CE. &longs;itq; hoc centrum K. at per definitionem centri grauitatis, &longs;i <lb/>pondera &longs;u&longs;pendantur ex K, manebunt. </s>

<arrow.to.target n="note13" xlink:type="simple"/>dus E grauius fuerit pondere D, erit centrum grauitatis in linea <lb/>CE. ſitq; hoc centrum K. at per definitionem centri grauitatis, ſi <lb/>pondera ſuſpendantur ex K, manebunt. </s>

<s id="id.2.1.9.7.1.5.0">ergo &longs;i &longs;u&longs;pendantur ex <lb/>C, non manebunt, quod e&longs;t contra hypote&longs;im: &longs;ed pondus E deor<lb/>&longs;um mouebitur. </s>

<s id="id.2.1.9.7.1.5.0">ergo ſi ſuſpendantur ex <lb/>C, non manebunt, quod eſt contra hypoteſim: ſed pondus E deor<lb/>ſum mouebitur. </s>

<s id="id.2.1.9.7.1.6.0">quòd &longs;i ex C quoque &longs;u&longs;pen&longs;a æqueponderarent; <lb/><arrow.to.target n="note14"></arrow.to.target>vnius magnitudinis duo e&longs;&longs;ent centra grauitatis; quod e&longs;t impo&longs;si<lb/>bile. </s>

<s id="id.2.1.9.7.1.6.0">quòd ſi ex C quoque ſuſpenſa æqueponderarent; <lb/>

<s id="id.2.1.9.7.1.7.0">Non igitur pondus in E grauius eo, quod e&longs;t in D, ip&longs;i D æque<lb/>ponderabit, cum ex puncto C fiat &longs;u&longs;pen&longs;io. </s>

<arrow.to.target n="note14" xlink:type="simple"/>vnius magnitudinis duo eſſent centra grauitatis; quod eſt impoſsi<lb/>bile. </s>

<s id="id.2.1.9.7.1.8.0">Pondera ergo in DE <lb/>æqualia ex eorum grauitatis centro C &longs;u&longs;pen&longs;a, æqueponderabunt, <lb/>manebuntquè. </s>

<s id="id.2.1.9.7.1.7.0">Non igitur pondus in E grauius eo, quod eſt in D, ipſi D æque<lb/>ponderabit, cum ex puncto C fiat ſuſpenſio. </s>

<s id="id.2.1.9.7.1.9.0">quod demon&longs;trare fuerat propo&longs;itum. </s>

<s id="id.2.1.9.7.1.8.0">Pondera ergo in DE <lb/>æqualia ex eorum grauitatis centro C ſuſpenſa, æqueponderabunt, <lb/>manebuntquè. </s>

<s id="id.2.1.9.7.1.9.0">quod demonſtrare fuerat propoſitum. </s>

<s id="id.2.1.10.1.1.1.0"><margin.target id="note8"></margin.target><emph type="italics"/>Iordanus de Ponderibus. <emph.end type="italics"/></s>

<margin.target id="note8"/>

<s id="id.2.1.10.1.1.2.0"><margin.target id="note9"></margin.target><emph type="italics"/>Hyerommus Cardanus de &longs;ubtilitate. <emph.end type="italics"/></s>

<emph type="italics"/>Iordanus de Ponderibus. <emph.end type="italics"/>

<s id="id.2.1.10.1.1.3.0"><margin.target id="note10"></margin.target><emph type="italics"/>Nicolaus Tartalea de quæ&longs;itis, ac inuentionibus. <emph.end type="italics"/></s>

</s>

<s id="id.2.1.10.1.1.4.0"><margin.target id="note11"></margin.target>2. <emph type="italics"/>Sup. huius. <emph.end type="italics"/></s>

<s id="id.2.1.10.1.1.6.0"><margin.target id="note12"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 4. <emph type="italics"/>primi Archim de Aequep.<emph.end type="italics"/></s>

<margin.target id="note9"/>

<s id="id.2.1.10.1.1.7.0"><margin.target id="note13"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 3. <emph type="italics"/>primi Archim de Aequep.<emph.end type="italics"/></s>

<emph type="italics"/>Hyerommus Cardanus de ſubtilitate. <emph.end type="italics"/>

<s id="id.2.1.10.1.1.8.0"><margin.target id="note14"></margin.target>1. <emph type="italics"/>Suppo&longs;. huius.<emph.end type="italics"/></s>

</s>

<margin.target id="note10"/>

<emph type="italics"/>Nicolaus Tartalea de quæſitis, ac inuentionibus. <emph.end type="italics"/>

</s>

<margin.target id="note11"/>2. <emph type="italics"/>Sup. huius. <emph.end type="italics"/>

</s>

<margin.target id="note12"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 4. <emph type="italics"/>primi Archim de Aequep.<emph.end type="italics"/>

</s>

<margin.target id="note13"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 3. <emph type="italics"/>primi Archim de Aequep.<emph.end type="italics"/>

</s>

<margin.target id="note14"/>1. <emph type="italics"/>Suppoſ. huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.11.1.1.1.0"><arrow.to.target n="note15"></arrow.to.target>Huic autem po&longs;tremo inconuenienti occurrunt dicentes, im<lb/>po&longs;sibile e&longs;&longs;e addere ip&longs;i E pondus adeo minimum, quin adhuc &longs;i <lb/>ex C &longs;u&longs;pendantur, pondus E &longs;emper deor&longs;um ver&longs;us G moueatur. </s>

<arrow.to.target n="note15" xlink:type="simple"/>Huic autem poſtremo inconuenienti occurrunt dicentes, im<lb/>poſsibile eſſe addere ipſi E pondus adeo minimum, quin adhuc ſi <lb/>ex C ſuſpendantur, pondus E ſemper deorſum verſus G moueatur. </s>

<s id="id.2.1.11.1.1.2.0"><lb/>quod nos fieri po&longs;&longs;e &longs;uppo&longs;uimus, atque fieri po&longs;&longs;e credebamus. </s>

<s id="id.2.1.11.1.1.3.0">ex<lb/>ce&longs;&longs;um enim ponderis D &longs;upra pondus E, cum quantitatis ratio<lb/>nem habeat, non &longs;olum minimum e&longs;&longs;e, verum in infinitum diuidi <lb/>po&longs;&longs;e immaginabamur, quod quidem ip&longs;i, non &longs;olum minimum, <pb n="7" xlink:href="036/01/027.jpg"/>&longs;ed ne minimum quidem e&longs;&longs;e, cum reperiri non po&longs;sit, hoc mo<lb/>do demon&longs;trare nituntur. <figure id="id.036.01.027.1.jpg" xlink:href="036/01/027/1.jpg"></figure></s>

<lb/>quod nos fieri poſſe ſuppoſuimus, atque fieri poſſe credebamus. </s>

<s id="id.2.1.11.1.1.3.0">ex<lb/>ceſſum enim ponderis D ſupra pondus E, cum quantitatis ratio<lb/>nem habeat, non ſolum minimum eſſe, verum in infinitum diuidi <lb/>poſſe immaginabamur, quod quidem ipſi, non ſolum minimum, <pb n="7" xlink:href="036/01/027.jpg" xlink:type="simple"/>ſed ne minimum quidem eſſe, cum reperiri non poſsit, hoc mo<lb/>do demonſtrare nituntur. <figure id="id.036.01.027.1.jpg" place="text" xlink:href="036/01/027/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.11.2.1.1.0">Exponantur eadem. </s>

<s id="id.2.1.11.2.1.2.0"><lb/>à puncti&longs;què DE hori<lb/>zonti <expan abbr="perp&etilde;diculares">perpendiculares</expan> du<lb/><expan abbr="cãtur">cantur</expan> DHEK, atq; alius <lb/>&longs;it circulus LDM, cu<lb/>ius <expan abbr="centr&utilde;">centrum</expan> N, qui FDG <lb/>in puncto D contingat, <lb/>ip&longs;iq; FDG &longs;it æqualis: <lb/>erit NC recta linea. </s>

<lb/>à punctiſquè DE hori<lb/>zonti <expan abbr="perpẽdiculares">perpendiculares</expan> du<lb/>

<s id="id.2.1.11.2.1.3.0">& <arrow.to.target n="note16"></arrow.to.target><lb/>quoniam angulus KEC <lb/>angulo HDN e&longs;t æqua <arrow.to.target n="note17"></arrow.to.target><lb/>lis, angulusq; CEG an<lb/>gulo NDM e&longs;t etiam <lb/>æqualis; cum à &longs;emidiametris, æqualibusq; circumferentiis conti<lb/>neatur; erit reliquus mixtu&longs;què angulus KEG reliquo mixtoquè <lb/>HDM æqualis. </s>

<expan abbr="cãtur">cantur</expan> DHEK, atq; alius <lb/>ſit circulus LDM, cu<lb/>ius <expan abbr="centrũ">centrum</expan> N, qui FDG <lb/>in puncto D contingat, <lb/>ipſiq; FDG ſit æqualis: <lb/>erit NC recta linea. </s>

<s id="id.2.1.11.2.1.4.0">& quia &longs;upponunt, quò minor e&longs;t angulus linea <lb/>horizonti perpendiculari, & circumferentia contentus, eò pondus <lb/>in eo &longs;itu grauius e&longs;&longs;e. </s>

<s id="id.2.1.11.2.1.5.0">vt quò minor e&longs;t angulus HD, & circumfe<lb/>rentia DG contentus angulo KEG, hoc e&longs;t angulo HDM; ita &longs;e<lb/>cundum hanc proportionem pondus in D grauius e&longs;&longs;e pondere in <lb/>E. </s>

<lb/>quoniam angulus KEC <lb/>angulo HDN eſt æqua <arrow.to.target n="note17" xlink:type="simple"/>

<s id="id.2.1.11.2.1.5.0.a">Proportio autem anguli MDH ad angulum HDG minor e&longs;t <lb/>qualibet proportione, quæ &longs;it inter maiorem, & minorem quanti<lb/>tatem: ergo proportio ponderum DE omnium proportionum mi<lb/>nima erit. </s>

<lb/>lis, angulusq; CEG an<lb/>gulo NDM eſt etiam <lb/>æqualis; cum à ſemidiametris, æqualibusq; circumferentiis conti<lb/>neatur; erit reliquus mixtuſquè angulus KEG reliquo mixtoquè <lb/>HDM æqualis. </s>

<s id="id.2.1.11.2.1.6.0">immo neq; erit ferè proportio, cum &longs;it omnium pro <lb/>portionum minima. </s>

<s id="id.2.1.11.2.1.4.0">& quia ſupponunt, quò minor eſt angulus linea <lb/>horizonti perpendiculari, & circumferentia contentus, eò pondus <lb/>in eo ſitu grauius eſſe. </s>

<s id="id.2.1.11.2.1.7.0">quòd autem proportio MDH ad HDG &longs;it <lb/>omnium minima, ex hac nece&longs;sitate o&longs;tendunt; quia MDH exce<lb/>dit HDG angulo curuilineo MDG, qui quidem angulus omnium <lb/>angulorum rectilineorum minimus exi&longs;tit: ergo cum non po&longs;sit da <lb/>ri angulus minor MDG, erit proportio MDH ad HDG <expan abbr="omni&utilde;">omnium</expan> <lb/>proportionum minima. </s>

<s id="id.2.1.11.2.1.5.0">vt quò minor eſt angulus HD, & circumfe<lb/>rentia DG contentus angulo KEG, hoc eſt angulo HDM; ita ſe<lb/>cundum hanc proportionem pondus in D grauius eſſe pondere in <lb/>E. </s>

<s id="id.2.1.11.2.1.8.0">quæ ratio inutilis valde videtur e&longs;&longs;e; quia <lb/>quamquam angulus MDG &longs;it omnibus rectilineis angulis minor, <lb/>non idcirco &longs;equitur, ab&longs;olutè, &longs;impliciterq; omnium e&longs;&longs;e <expan abbr="angulor&utilde;">angulorum</expan> <lb/>minimum: nam ducatur à puncto D linea DO ip&longs;i NC perpendicu<lb/>laris, hæc vtra&longs;q; tanget circumferentias LDM FDG in puncto <arrow.to.target n="note18"></arrow.to.target><pb xlink:href="036/01/028.jpg"/>D. </s>

<s id="id.2.1.11.2.1.5.0.a">Proportio autem anguli MDH ad angulum HDG minor eſt <lb/>qualibet proportione, quæ ſit inter maiorem, & minorem quanti<lb/>tatem: ergo proportio ponderum DE omnium proportionum mi<lb/>nima erit. </s>

<s>quia verò circumfe<lb/>rentiæ &longs;unt æquales, erit <lb/>angulus MDO mixtus <lb/>angulo ODG mixto <lb/>æqualis; alter ergo an<lb/>gulus, vt ODG minor <lb/>erit MDG, hoc e&longs;t mi <lb/>nor minimo. </s>

<s id="id.2.1.11.2.1.6.0">immo neq; erit ferè proportio, cum ſit omnium pro <lb/>portionum minima. </s>

<s id="id.2.1.11.2.1.9.0">angulus <lb/>deinde OGH minor <lb/>erit angulo MDH; qua <lb/>re ODH ad angulum <lb/><arrow.to.target n="note19"></arrow.to.target>HDG minorem habe<lb/>bit <expan abbr="proportion&etilde;">proportionem</expan>, quàm <lb/><figure id="id.036.01.028.1.jpg" xlink:href="036/01/028/1.jpg"></figure><lb/>MDH ad eundem HDG. </s>

<s id="id.2.1.11.2.1.7.0">quòd autem proportio MDH ad HDG ſit <lb/>omnium minima, ex hac neceſsitate oſtendunt; quia MDH exce<lb/>dit HDG angulo curuilineo MDG, qui quidem angulus omnium <lb/>angulorum rectilineorum minimus exiſtit: ergo cum non poſsit da <lb/>ri angulus minor MDG, erit proportio MDH ad HDG <expan abbr="omniũ">omnium</expan>

<s>dabitur ergo quoquè proportio mi<lb/>nor minima, quam in infinitum adhuc minorem ita o&longs;tende<lb/>mus. </s>

<lb/>proportionum minima. </s>

<s id="id.2.1.11.2.1.10.0">De&longs;cribatur circulus DR, cuius centrum E, & &longs;emidiame<lb/><arrow.to.target n="note20"></arrow.to.target>ter ED. continget circumferentia DR circumferentiam DG in <lb/><arrow.to.target n="note21"></arrow.to.target>puncto D, lineamquè DO in puncto D; quare minor erit angu<lb/>lus RDG angulo ODG. &longs;imiliter & angulus RDH angulo <lb/>ODH. </s>

<s id="id.2.1.11.2.1.8.0">quæ ratio inutilis valde videtur eſſe; quia <lb/>quamquam angulus MDG ſit omnibus rectilineis angulis minor, <lb/>non idcirco ſequitur, abſolutè, ſimpliciterq; omnium eſſe <expan abbr="angulorũ">angulorum</expan>

<s id="id.2.1.11.2.1.10.0.a">minorem igitur proportionem habebit RDH ad HDG, <lb/>quàm ODH ad HDG. </s>

<lb/>minimum: nam ducatur à puncto D linea DO ipſi NC perpendicu<lb/>laris, hæc vtraſq; tanget circumferentias LDM FDG in puncto <arrow.to.target n="note18" xlink:type="simple"/>

<s id="id.2.1.11.2.1.10.0.b">Accipiatur deinde inter EC vtcun<lb/>que punctum P, ex quo in di&longs;tantia PD alia de&longs;cribatur circum<lb/>ferentia DQ, quæ circumferentiam DR, circumferentiamquè <lb/>DG in puncto D continget; & angulus QDH minor erit <lb/>angulo RDH: ergo QDH ad HDG minorem habebit propor<lb/>tionem, quàm RDH ad HDG. </s>

<s>eodemquè pror&longs;us modo, &longs;i <lb/>inter PC aliud accipiatur punctum, & inter hoc &C aliud, & &longs;ic <lb/>deinceps, infinitæ de&longs;cribentur circumferentiæ inter DO, & cir<lb/>cumferentiam DG; ex quibus proportionem in infinitum &longs;emper <lb/>minorem inueniemus. </s>

<s id="N109FD">quia verò circumfe<lb/>rentiæ ſunt æquales, erit <lb/>angulus MDO mixtus <lb/>angulo ODG mixto <lb/>æqualis; alter ergo an<lb/>gulus, vt ODG minor <lb/>erit MDG, hoc eſt mi <lb/>nor minimo. </s>

<s id="id.2.1.11.2.1.11.0">atque ideo proportionem ponderis in D <lb/>ad pondus in E non adeo minorem e&longs;&longs;e &longs;equitur, quin ad infini <lb/>tum ip&longs;a &longs;emper minorem reperiri po&longs;sit. </s>

<s id="id.2.1.11.2.1.9.0">angulus <lb/>deinde OGH minor <lb/>erit angulo MDH; qua <lb/>re ODH ad angulum <lb/>

<s id="id.2.1.11.2.1.12.0">& quia angulus MDG <lb/>in infinitum diuidi pote&longs;t; exce&longs;&longs;us quoque grauitatis D &longs;upra E <lb/>diuidi ad infinitum poterit. </s>

<arrow.to.target n="note19" xlink:type="simple"/>HDG minorem habe<lb/>bit <expan abbr="proportionẽ">proportionem</expan>, quàm <lb/>

<lb/>MDH ad eundem HDG. </s>

<s id="N10A29">dabitur ergo quoquè proportio mi<lb/>nor minima, quam in infinitum adhuc minorem ita oſtende<lb/>mus. </s>

<s id="id.2.1.11.2.1.10.0">Deſcribatur circulus DR, cuius centrum E, & ſemidiame<lb/>

<arrow.to.target n="note20" xlink:type="simple"/>ter ED. continget circumferentia DR circumferentiam DG in <lb/>

<arrow.to.target n="note21" xlink:type="simple"/>puncto D, lineamquè DO in puncto D; quare minor erit angu<lb/>lus RDG angulo ODG. ſimiliter & angulus RDH angulo <lb/>ODH. </s>

<s id="id.2.1.11.2.1.10.0.a">minorem igitur proportionem habebit RDH ad HDG, <lb/>quàm ODH ad HDG. </s>

<s id="id.2.1.11.2.1.10.0.b">Accipiatur deinde inter EC vtcun<lb/>que punctum P, ex quo in diſtantia PD alia deſcribatur circum<lb/>ferentia DQ, quæ circumferentiam DR, circumferentiamquè <lb/>DG in puncto D continget; & angulus QDH minor erit <lb/>angulo RDH: ergo QDH ad HDG minorem habebit propor<lb/>tionem, quàm RDH ad HDG. </s>

<s id="N10A52">eodemquè prorſus modo, ſi <lb/>inter PC aliud accipiatur punctum, & inter hoc &C aliud, & ſic <lb/>deinceps, infinitæ deſcribentur circumferentiæ inter DO, & cir<lb/>cumferentiam DG; ex quibus proportionem in infinitum ſemper <lb/>minorem inueniemus. </s>

<s id="id.2.1.11.2.1.11.0">atque ideo proportionem ponderis in D <lb/>ad pondus in E non adeo minorem eſſe ſequitur, quin ad infini <lb/>tum ipſa ſemper minorem reperiri poſsit. </s>

<s id="id.2.1.11.2.1.12.0">& quia angulus MDG <lb/>in infinitum diuidi poteſt; exceſſus quoque grauitatis D ſupra E <lb/>diuidi ad infinitum poterit. </s>

<s id="id.2.1.12.1.1.1.0"><margin.target id="note15"></margin.target><emph type="italics"/>Tartalea &longs;exta propo&longs;itione octaui libri.<emph.end type="italics"/></s>

<margin.target id="note15"/>

<s id="id.2.1.12.1.1.2.0"><margin.target id="note16"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 12. <emph type="italics"/>tertii.<emph.end type="italics"/></s>

<emph type="italics"/>Tartalea ſexta propoſitione octaui libri.<emph.end type="italics"/>

<s id="id.2.1.12.1.1.3.0"><margin.target id="note17"></margin.target>29. <emph type="italics"/>Primi.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.12.1.1.4.0"><margin.target id="note18"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 18. <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<s id="id.2.1.12.1.1.5.0"><margin.target id="note19"></margin.target>8. <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note16"/>

<s id="id.2.1.12.1.1.6.0"><margin.target id="note20"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 11. <emph type="italics"/>tertit.<emph.end type="italics"/></s>

<emph type="italics"/>Ex<emph.end type="italics"/> 12. <emph type="italics"/>tertii.<emph.end type="italics"/>

<s id="id.2.1.12.1.1.7.0"><margin.target id="note21"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 18. <emph type="italics"/>tertii.<emph.end type="italics"/></s>

</s>

<margin.target id="note17"/>29. <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<margin.target id="note18"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 18. <emph type="italics"/>Tertii.<emph.end type="italics"/>

</s>

<margin.target id="note19"/>8. <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note20"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 11. <emph type="italics"/>tertit.<emph.end type="italics"/>

</s>

<margin.target id="note21"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 18. <emph type="italics"/>tertii.<emph.end type="italics"/>

</s>

<s id="id.2.1.13.1.2.1.0">Sed neque prætereundum <lb/>eſt, ipſos in demonſtratio<lb/>ne angulum KEG maiorem <lb/>eſſe angulo HDG, tanquam <lb/>notum accepiſſe. </s>

<s id="id.2.1.13.1.2.1.0">Sed neque prætereundum <lb/>e&longs;t, ip&longs;os in demon&longs;tratio<lb/>ne angulum KEG maiorem <lb/>e&longs;&longs;e angulo HDG, tanquam <lb/>notum accepi&longs;&longs;e. </s>

<s id="id.2.1.13.1.2.2.0">quod eſt <lb/>quidem verum, ſi DHEK <lb/>inter ſe ſe ſint æquidiſtan<lb/>tes. </s>

<s id="id.2.1.13.1.2.2.0">quod e&longs;t <lb/>quidem verum, &longs;i DHEK <lb/>inter &longs;e &longs;e &longs;int æquidi&longs;tan<lb/>tes. </s>

<s id="id.2.1.13.1.2.3.0">Quoniam autem (vt <lb/>ipſi quoque ſupponunt) li<lb/>neæ DHEK in centrum <lb/>mundi conueniunt; lineæ <lb/>DHEK æquidiſtantes nun<lb/>quam erunt, & angulus KEG <lb/>angulo HDG non ſolum <lb/>maior erit, ſed minor. </s>

<s id="id.2.1.13.1.2.3.0">Quoniam autem (vt <lb/>ip&longs;i quoque &longs;upponunt) li<lb/>neæ DHEK in centrum <lb/>mundi conueniunt; lineæ <lb/>DHEK æquidi&longs;tantes nun<lb/>quam erunt, & angulus KEG <lb/>angulo HDG non &longs;olum <lb/>maior erit, &longs;ed minor. </s>

<s id="id.2.1.13.1.2.4.0">vt <lb/>exempli gratia, producatur <lb/>FG vſque ad centrum mun<lb/>di, quod ſit S; connectan<lb/>;turqué DSES. </s>

<s id="id.2.1.13.1.2.4.0">vt <lb/>exempli gratia, producatur <lb/>FG v&longs;que ad centrum mun<lb/>di, quod &longs;it S; connectan<lb/>;turqué DSES. </s>

<s id="N10AFD">oſtenden<lb/>dum eſt angulum SEG mi<lb/>norem eſſe angulo SDG. </s>

<s>o&longs;tenden<lb/>dum e&longs;t angulum SEG mi<lb/>norem e&longs;&longs;e angulo SDG. </s>

<s id="id.2.1.13.1.2.4.0.a">du<lb/><figure id="id.036.01.029.1.jpg" xlink:href="036/01/029/1.jpg"></figure><lb/>catur à puncto E linea ET circulum DGEF contingens, ab eo <lb/>demqué puncto ip&longs;i DS æquidi&longs;tans ducatur EV. </s>

<s id="id.2.1.13.1.2.4.0.b">Quoniam igi<lb/>tur EVDS inter &longs;e &longs;e &longs;unt æquidi&longs;tantes: &longs;imiliter ETDO æqui <lb/>di&longs;tantes: erit angulus VET angulo SDO æqualis. </s>

<lb/>catur à puncto E linea ET circulum DGEF contingens, ab eo <lb/>demqué puncto ipſi DS æquidiſtans ducatur EV. </s>

<s id="id.2.1.13.1.2.5.0">& angulus <lb/>TEG angulo ODM e&longs;t æqualis; cum à lineis contingentibus, <lb/>circumferentii&longs;qué æqualibus contineatur: totus ergo angulus <lb/>VEG angulo SDM æqualis erit. </s>

<s id="id.2.1.13.1.2.4.0.b">Quoniam igi<lb/>tur EVDS inter ſe ſe ſunt æquidiſtantes: ſimiliter ETDO æqui <lb/>diſtantes: erit angulus VET angulo SDO æqualis. </s>

<s id="id.2.1.13.1.2.6.0">Auferatur ab angulo SDM <lb/>angulus curuilineus MDG; ab angulo autem VEG angulus au<lb/>feratur VES; & angulus VES rectilineus maior e&longs;t curuilineo <lb/>MDG; erit reliquus angulus SEG minor angulo SDG. </s>

<s id="id.2.1.13.1.2.5.0">& angulus <lb/>TEG angulo ODM eſt æqualis; cum à lineis contingentibus, <lb/>circumferentiiſqué æqualibus contineatur: totus ergo angulus <lb/>VEG angulo SDM æqualis erit. </s>

<s id="id.2.1.13.1.2.6.0.a"><lb/>Quare ex ip&longs;orum &longs;uppo&longs;itionibus non &longs;olum pondus in D gra<lb/>uius erit pondere in E; verùm è conuer&longs;o, pondus in E ip&longs;o D <lb/>grauius exi&longs;tet. </s>

<s id="id.2.1.13.1.2.6.0">Auferatur ab angulo SDM <lb/>angulus curuilineus MDG; ab angulo autem VEG angulus au<lb/>feratur VES; & angulus VES rectilineus maior eſt curuilineo <lb/>MDG; erit reliquus angulus SEG minor angulo SDG. </s>

<lb/>Quare ex ipſorum ſuppoſitionibus non ſolum pondus in D gra<lb/>uius erit pondere in E; verùm è conuerſo, pondus in E ipſo D <lb/>grauius exiſtet. </s>

<s id="id.2.1.13.3.1.1.0">Rationes tamen af<lb/>ferunt, quibus demon<lb/>ſtrare nituntur, libram <lb/>DE in AB horizon<lb/>ti æquidiſtantem ex <lb/>neceſsitate redire. </s>

<s id="id.2.1.13.3.1.1.0">Rationes tamen af<lb/>ferunt, quibus demon<lb/>&longs;trare nituntur, libram <lb/>DE in AB horizon<lb/>ti æquidi&longs;tantem ex <lb/>nece&longs;sitate redire. </s>

<s id="id.2.1.13.3.1.2.0"><expan abbr="Primùm">Pri<lb/>mum</expan> quidem o&longs;ten<lb/>dunt, idem pondus <lb/>grauius e&longs;&longs;e in A, <lb/>quàm in alio &longs;itu, quem <lb/>æqualitatis &longs;itum no<lb/>minant, cum linea <lb/>AB &longs;it horizonti æ<lb/><figure id="id.036.01.030.1.jpg" xlink:href="036/01/030/1.jpg"></figure><lb/>quidi&longs;tans. </s>

<expan abbr="Primùm">Pri<lb/>mum</expan> quidem oſten<lb/>dunt, idem pondus <lb/>grauius eſſe in A, <lb/>quàm in alio ſitu, quem <lb/>æqualitatis ſitum no<lb/>minant, cum linea <lb/>AB ſit horizonti æ<lb/>

<s id="id.2.1.13.3.1.3.0">deinde quò propius e&longs;t ip&longs;i A, quouis alio remotiori <lb/>grauius e&longs;&longs;e. </s>

<s id="id.2.1.13.3.1.4.0">Vt pondus in A grauius e&longs;&longs;e, quàm in D; & in D, <lb/>quàm in L. &longs;imiliter in A grauius, quam in N; & in N grauius, <lb/>quàm in M. </s>

<lb/>quidiſtans. </s>

<s id="id.2.1.13.3.1.4.0.a">Vnum tantùm con&longs;iderando pondus in altero libræ <lb/><arrow.to.target n="note22"></arrow.to.target>brachio &longs;ur&longs;um deor&longs;umq; moto. </s>

<s id="id.2.1.13.3.1.3.0">deinde quò propius eſt ipſi A, quouis alio remotiori <lb/>grauius eſſe. </s>

<s id="id.2.1.13.3.1.5.0">Quia (inquiunt) po&longs;ita trutina <lb/>in CF, pondus in A longius e&longs;t à trutina, quàm in D: & in D <lb/>longius, quàm in L. </s>

<s id="id.2.1.13.3.1.4.0">Vt pondus in A grauius eſſe, quàm in D; & in D, <lb/>quàm in L. ſimiliter in A grauius, quam in N; & in N grauius, <lb/>quàm in M. </s>

<s>ductis enim DO LP ip&longs;i CF perpendicula<lb/><arrow.to.target n="note23"></arrow.to.target>ribus, linea AC maior e&longs;t, quàm DO, & DO ip&longs;a LP. </s>

<s id="id.2.1.13.3.1.4.0.a">Vnum tantùm conſiderando pondus in altero libræ <lb/>

<s>quod <lb/><arrow.to.target n="note24"></arrow.to.target>idem euenit in punctis NM. </s>

<arrow.to.target n="note22" xlink:type="simple"/>brachio ſurſum deorſumq; moto. </s>

<s id="id.2.1.13.3.1.5.0.a">deinde ex quo loco (aiunt) pon<lb/>dus velocius mouetur, ibi grauius e&longs;t; velocius autem ex A, quàm <lb/>ab alio &longs;itu mouetur; ergo in A grauius e&longs;t. </s>

<s id="id.2.1.13.3.1.5.0">Quia (inquiunt) poſita trutina <lb/>in CF, pondus in A longius eſt à trutina, quàm in D: & in D <lb/>longius, quàm in L. </s>

<s id="id.2.1.13.3.1.6.0">&longs;imili modo, quò <lb/>propius e&longs;t ip&longs;i A, velocius quoque mouetur; ergo in D gra<lb/><arrow.to.target n="note25"></arrow.to.target>uius erit, quàm in L. </s>

<s id="N10B7B">ductis enim DO LP ipſi CF perpendicula<lb/>

<s id="id.2.1.13.3.1.6.0.a">Altera deinde cau&longs;a, quam ex rectiori, & obli<lb/><arrow.to.target n="note26"></arrow.to.target>quiori motu deducunt, e&longs;t; quò pondus in arcubus æqualibus re<lb/>ctius de&longs;cendit, grauius e&longs;&longs;e videtur; cum pondus liberum, atq; <lb/><arrow.to.target n="note27"></arrow.to.target>&longs;olutum &longs;uaptè natura rectè moueatur; &longs;ed in A rectius de&longs;cen<lb/>dit; ergo in A grauius erit. </s>

<arrow.to.target n="note23" xlink:type="simple"/>ribus, linea AC maior eſt, quàm DO, & DO ipſa LP. </s>

<s id="id.2.1.13.3.1.7.0">hocq; o&longs;tendunt accipiendo arcum <lb/>AN arcui LD æqualem; à puncti&longs;q; NL lineæ FG (quam <lb/>etiam directionis vocant) æquidi&longs;tantes ducantur NRLQ, quæ <lb/>lineas AB DO &longs;ecent in QR; & à puncto N ip&longs;i FG perpen<lb/>dicularis ducatur NT. rectèq; demon&longs;trant LQ ip&longs;i PO æqua<lb/>lem e&longs;&longs;e, & NR ip&longs;i CT; lineamq; NR ip&longs;a LQ maiorem e&longs;&longs;e. </s>

<s id="id.2.1.13.3.1.8.0"><lb/>Quoniam autem de&longs;cen&longs;u; ponderis ex A v&longs;q; ad N per circum<pb n="9" xlink:href="036/01/031.jpg"/>ferentiam AN maiorem portionem lineæ FG pertran&longs;it (quod <lb/>ip&longs;i vocant capere de directo) quàm de&longs;cen&longs;us ex L in D per cir<lb/>cumferentiam LD; cùm de&longs;cen&longs;us AN lineam CT pertran&longs;eat, <lb/>de&longs;cen&longs;us verò LD lineam PO; & CT maior e&longs;t PO; rectior erit <lb/>de&longs;cen&longs;us AN, quám de&longs;cen&longs;us LD. </s>

<arrow.to.target n="note24" xlink:type="simple"/>idem euenit in punctis NM. </s>

<s id="id.2.1.13.3.1.8.0.a">grauius ergo erit pondus <lb/>in A, quàm in L, & in quouis alio &longs;itu. </s>

<s id="id.2.1.13.3.1.5.0.a">deinde ex quo loco (aiunt) pon<lb/>dus velocius mouetur, ibi grauius eſt; velocius autem ex A, quàm <lb/>ab alio ſitu mouetur; ergo in A grauius eſt. </s>

<s id="id.2.1.13.3.1.9.0">eodemq; pror&longs;us <lb/>modo o&longs;tendunt, quò propius e&longs;t ip&longs;i A, grauius e&longs;&longs;e. </s>

<s id="id.2.1.13.3.1.6.0">ſimili modo, quò <lb/>propius eſt ipſi A, velocius quoque mouetur; ergo in D gra<lb/>

<s id="id.2.1.13.3.1.10.0"><lb/>Vt &longs;int circumferentiæ LD DA inter &longs;e &longs;e æquales, & à puncto <lb/>D ip&longs;i AB perpendicularis ducatur DR; erit DR ip&longs;i CO æqua <arrow.to.target n="note28"></arrow.to.target><lb/>lis. </s>

<arrow.to.target n="note25" xlink:type="simple"/>uius erit, quàm in L. </s>

<s id="id.2.1.13.3.1.11.0">lineam deinde DR ip&longs;a LQ maiorem e&longs;&longs;e demon&longs;trant. </s>

<s id="id.2.1.13.3.1.6.0.a">Altera deinde cauſa, quam ex rectiori, & obli<lb/>

<s id="id.2.1.13.3.1.12.0">di<lb/>cuntq; de&longs;cen&longs;um DA magis capere de directo de&longs;cen&longs;u LD, ma<lb/>ior enim e&longs;t linea CO, quàm OP; quare pondus grauius erit <lb/>in D, quàm in L. quod ip&longs;um euenit in punctis NM. </s>

<arrow.to.target n="note26" xlink:type="simple"/>quiori motu deducunt, eſt; quò pondus in arcubus æqualibus re<lb/>ctius deſcendit, grauius eſſe videtur; cum pondus liberum, atq; <lb/>

<s id="id.2.1.13.3.1.12.0.a">Suppo<lb/>&longs;itionem itaq;, qua libram DE in AB redire demon&longs;trant, vt <arrow.to.target n="note29"></arrow.to.target><lb/>notam, manife&longs;tamq; proferunt. </s>

<arrow.to.target n="note27" xlink:type="simple"/>ſolutum ſuaptè natura rectè moueatur; ſed in A rectius deſcen<lb/>dit; ergo in A grauius erit. </s>

<s id="id.2.1.13.3.1.13.0">Nempè Secundùm &longs;itum pon<lb/>dus grauius e&longs;&longs;e, quanto in eodem &longs;itu minus obliquus e&longs;t de&longs;cen<lb/>&longs;us. </s>

<s id="id.2.1.13.3.1.7.0">hocq; oſtendunt accipiendo arcum <lb/>AN arcui LD æqualem; à punctiſq; NL lineæ FG (quam <lb/>etiam directionis vocant) æquidiſtantes ducantur NRLQ, quæ <lb/>lineas AB DO ſecent in QR; & à puncto N ipſi FG perpen<lb/>dicularis ducatur NT. rectèq; demonſtrant LQ ipſi PO æqua<lb/>lem eſſe, & NR ipſi CT; lineamq; NR ipſa LQ maiorem eſſe. </s>

<s id="id.2.1.13.3.1.14.0">huiu&longs;q; reditus cau&longs;am eam e&longs;&longs;e dicunt; Quoniam &longs;cilicet <arrow.to.target n="note30"></arrow.to.target><lb/>de&longs;cen&longs;us ponderis in D rectior e&longs;t de&longs;cen&longs;u ponderis in E, cùm <lb/>minus capiat de directo pondus in E de&longs;cendendo, quàm pon<arrow.to.target n="note31"></arrow.to.target><lb/>dus in D &longs;im liter de&longs;cendendo. </s>

<s id="id.2.1.13.3.1.15.0">Vt &longs;i arcus EV &longs;it ip&longs;i DA <lb/>æqualis, ducanturq; VH ET ip&longs;i FG perpendiculares; maior <lb/>erit DR, quàm TH. </s>

<lb/>Quoniam autem deſcenſu; ponderis ex A vſq; ad N per circum<pb n="9" xlink:href="036/01/031.jpg" xlink:type="simple"/>ferentiam AN maiorem portionem lineæ FG pertranſit (quod <lb/>ipſi vocant capere de directo) quàm deſcenſus ex L in D per cir<lb/>cumferentiam LD; cùm deſcenſus AN lineam CT pertranſeat, <lb/>deſcenſus verò LD lineam PO; & CT maior eſt PO; rectior erit <lb/>deſcenſus AN, quám deſcenſus LD. </s>

<s>quare per &longs;uppo&longs;itionem pondus in D ra<lb/>tione &longs;itus grauius erit pondere in E. </s>

<s id="id.2.1.13.3.1.8.0.a">grauius ergo erit pondus <lb/>in A, quàm in L, & in quouis alio ſitu. </s>

<s id="id.2.1.13.3.1.15.0.a">pondus ergo in D, cùm &longs;it <lb/>grauius, deor&longs;um mouebitur; pondus verò in E &longs;ur&longs;um, donec li<lb/>bra DE in AB redeat. </s>

<s id="id.2.1.13.3.1.9.0">eodemq; prorſus <lb/>modo oſtendunt, quò propius eſt ipſi A, grauius eſſe. </s>

<lb/>Vt ſint circumferentiæ LD DA inter ſe ſe æquales, & à puncto <lb/>D ipſi AB perpendicularis ducatur DR; erit DR ipſi CO æqua <arrow.to.target n="note28" xlink:type="simple"/>

<s id="id.2.1.13.3.1.11.0">lineam deinde DR ipſa LQ maiorem eſſe demonſtrant. </s>

<s id="id.2.1.13.3.1.12.0">di<lb/>cuntq; deſcenſum DA magis capere de directo deſcenſu LD, ma<lb/>ior enim eſt linea CO, quàm OP; quare pondus grauius erit <lb/>in D, quàm in L. quod ipſum euenit in punctis NM. </s>

<s id="id.2.1.13.3.1.12.0.a">Suppo<lb/>ſitionem itaq;, qua libram DE in AB redire demonſtrant, vt <arrow.to.target n="note29" xlink:type="simple"/>

<lb/>notam, manifeſtamq; proferunt. </s>

<s id="id.2.1.13.3.1.13.0">Nempè Secundùm ſitum pon<lb/>dus grauius eſſe, quanto in eodem ſitu minus obliquus eſt deſcen<lb/>ſus. </s>

<s id="id.2.1.13.3.1.14.0">huiuſq; reditus cauſam eam eſſe dicunt; Quoniam ſcilicet <arrow.to.target n="note30" xlink:type="simple"/>

<lb/>deſcenſus ponderis in D rectior eſt deſcenſu ponderis in E, cùm <lb/>minus capiat de directo pondus in E deſcendendo, quàm pon<arrow.to.target n="note31" xlink:type="simple"/>

<lb/>dus in D ſim liter deſcendendo. </s>

<s id="id.2.1.13.3.1.15.0">Vt ſi arcus EV ſit ipſi DA <lb/>æqualis, ducanturq; VH ET ipſi FG perpendiculares; maior <lb/>erit DR, quàm TH. </s>

<s id="N10C11">quare per ſuppoſitionem pondus in D ra<lb/>tione ſitus grauius erit pondere in E. </s>

<s id="id.2.1.13.3.1.15.0.a">pondus ergo in D, cùm ſit <lb/>grauius, deorſum mouebitur; pondus verò in E ſurſum, donec li<lb/>bra DE in AB redeat. </s>

<s id="id.2.1.14.1.1.1.0"><margin.target id="note22"></margin.target><emph type="italics"/>Cardanus primo de &longs;ubtilitate. <emph.end type="italics"/></s>

<margin.target id="note22"/>

<s id="id.2.1.14.1.1.2.0"><margin.target id="note23"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 15. <emph type="italics"/>tertii.<emph.end type="italics"/></s>

<emph type="italics"/>Cardanus primo de ſubtilitate. <emph.end type="italics"/>

<s id="id.2.1.14.1.1.3.0"><margin.target id="note24"></margin.target><emph type="italics"/>Cardanus. <emph.end type="italics"/></s>

</s>

<s id="id.2.1.14.1.1.4.0"><margin.target id="note25"></margin.target><emph type="italics"/>Cardanus. <emph.end type="italics"/></s>

<s id="id.2.1.14.1.1.5.0"><margin.target id="note26"></margin.target><emph type="italics"/>Iordanus propo&longs;itio ne<emph.end type="italics"/> 4. </s>

<margin.target id="note23"/>

<s id="id.2.1.14.1.1.6.0"><margin.target id="note27"></margin.target><emph type="italics"/>Tartalea propo&longs;itione<emph.end type="italics"/> 5. </s>

<emph type="italics"/>Ex<emph.end type="italics"/> 15. <emph type="italics"/>tertii.<emph.end type="italics"/>

<s id="id.2.1.14.1.1.7.0"><margin.target id="note28"></margin.target>34 <emph type="italics"/>Primi. <emph.end type="italics"/></s>

</s>

<s id="id.2.1.14.1.1.8.0"><margin.target id="note29"></margin.target><emph type="italics"/>Iordanus &longs;uppo&longs;itione<emph.end type="italics"/> 4. </s>

<s id="id.2.1.14.1.1.9.0"><margin.target id="note30"></margin.target><emph type="italics"/>Iordanus propo&longs;itio ne<emph.end type="italics"/> 3. </s>

<margin.target id="note24"/>

<s id="id.2.1.14.1.1.10.0"><margin.target id="note31"></margin.target><emph type="italics"/>Tartalea propo&longs;itio ne<emph.end type="italics"/> 5. </s>

<emph type="italics"/>Cardanus. <emph.end type="italics"/>

</s>

<margin.target id="note25"/>

<emph type="italics"/>Cardanus. <emph.end type="italics"/>

</s>

<margin.target id="note26"/>

<emph type="italics"/>Iordanus propoſitio ne<emph.end type="italics"/> 4. </s>

<margin.target id="note27"/>

<emph type="italics"/>Tartalea propoſitione<emph.end type="italics"/> 5. </s>

<margin.target id="note28"/>34 <emph type="italics"/>Primi. <emph.end type="italics"/>

</s>

<margin.target id="note29"/>

<emph type="italics"/>Iordanus ſuppoſitione<emph.end type="italics"/> 4. </s>

<margin.target id="note30"/>

<emph type="italics"/>Iordanus propoſitio ne<emph.end type="italics"/> 3. </s>

<margin.target id="note31"/>

<emph type="italics"/>Tartalea propoſitio ne<emph.end type="italics"/> 5. </s>

<s id="id.2.1.15.1.1.1.0">Altera huius quoq; reditus ratio eſt, cùm trutina ſupra libram <arrow.to.target n="note32" xlink:type="simple"/>

<s id="id.2.1.15.1.1.1.0">Altera huius quoq; reditus ratio e&longs;t, cùm trutina &longs;upra libram <arrow.to.target n="note32"></arrow.to.target><lb/>e&longs;t in CF; linea CG e&longs;t meta. </s>

<lb/>eſt in CF; linea CG eſt meta. </s>

<s id="id.2.1.15.1.1.2.0">& quoniam angulus GCD ma<lb/>ior e&longs;t angulo GCE, & maior à meta angulus grauius reddit <lb/>pondus; trutina igitur &longs;uperius exi&longs;tente, grauius erit pondus in <lb/>D, quàm in E. </s>

<s id="id.2.1.15.1.1.2.0">& quoniam angulus GCD ma<lb/>ior eſt angulo GCE, & maior à meta angulus grauius reddit <lb/>pondus; trutina igitur ſuperius exiſtente, grauius erit pondus in <lb/>D, quàm in E. </s>

<s>idcirco D in A, & E in B redibit. </s>

<s id="N10C99">idcirco D in A, & E in B redibit. </s>

<s id="id.2.1.16.1.1.1.0"><margin.target id="note32"></margin.target><emph type="italics"/>Cardanus.<emph.end type="italics"/></s>

<margin.target id="note32"/>

<emph type="italics"/>Cardanus.<emph.end type="italics"/>

</s>

<s id="id.2.1.17.1.1.1.0">His itaq; rationibus conantur oſtendere libram DE in AB re<lb/>dire; quæ meo quidem iuditio facile ſolui poſſunt. </s>

<s id="id.2.1.17.1.1.1.0">His itaq; rationibus conantur o&longs;tendere libram DE in AB re<lb/>dire; quæ meo quidem iuditio facile &longs;olui po&longs;&longs;unt. </s>

<s id="id.2.1.17.3.1.1.0">Primùm itaq; quan<lb/>tum attinet ad ratio<lb/>nes pondus in A gra<lb/>uius eſſe, quàm in a<lb/>lio ſitu oſtendentes, <lb/>quas ex longiori, & <lb/>propinquiori <expan abbr="diſtãtia">diſtantia</expan> à <lb/>linea FG, & ex velo<lb/>ciori, & rectiori mo <lb/>tu à puncto A dedu<lb/>cunt; primùm quidem <lb/>non demonſtrant, cur <lb/>pondus ex A velocius <lb/>

<s id="id.2.1.17.3.1.1.0">Primùm itaq; quan<lb/>tum attinet ad ratio<lb/>nes pondus in A gra<lb/>uius e&longs;&longs;e, quàm in a<lb/>lio &longs;itu o&longs;tendentes, <lb/>quas ex longiori, & <lb/>propinquiori <expan abbr="di&longs;tãtia">di&longs;tantia</expan> à <lb/>linea FG, & ex velo<lb/>ciori, & rectiori mo <lb/>tu à puncto A dedu<lb/>cunt; primùm quidem <lb/>non demon&longs;trant, cur <lb/>pondus ex A velocius <lb/><figure id="id.036.01.032.1.jpg" xlink:href="036/01/032/1.jpg"></figure><lb/>moueatur, quàm ex alio &longs;itu. </s>

<s id="id.2.1.17.3.1.2.0">nec quia CA e&longs;t DO maior, <lb/>& DO ip&longs;a LP, propterea &longs;equitur tanquam ex vera cau&longs;a, pon<lb/>dus in A grauius e&longs;&longs;e, quàm in D; & in D, quàm in L. </s>

<lb/>moueatur, quàm ex alio ſitu. </s>

<s id="id.2.1.17.3.1.2.0.a">neq; <lb/>enim intellectus quie&longs;cit, ni&longs;i alia huius o&longs;tendatur cau&longs;a; cùm po<lb/>tius &longs;ignum, quàm vera cau&longs;a e&longs;&longs;e videatur. </s>

<s id="id.2.1.17.3.1.2.0">nec quia CA eſt DO maior, <lb/>& DO ipſa LP, propterea ſequitur tanquam ex vera cauſa, pon<lb/>dus in A grauius eſſe, quàm in D; & in D, quàm in L. </s>

<s id="id.2.1.17.3.1.3.0">id ip&longs;um quoq; al<lb/>teri rationi contintingit, quam ex rectiori & obliquiori motu de<lb/>ducunt. </s>

<s id="id.2.1.17.3.1.2.0.a">neq; <lb/>enim intellectus quieſcit, niſi alia huius oſtendatur cauſa; cùm po<lb/>tius ſignum, quàm vera cauſa eſſe videatur. </s>

<s id="id.2.1.17.3.1.4.0">Præterea quæcunq; ex velociori, & rectiori motu per<lb/>&longs;uadent pondus in A grauius e&longs;&longs;e, quàm in D; non ideo de<lb/>mon&longs;trant pondus in A, quatenus e&longs;t in A, grauius e&longs;&longs;e pon<lb/>dere in D, quatenus e&longs;t in D; &longs;ed quatenus à punctis DA rece<lb/>dit. </s>

<s id="id.2.1.17.3.1.3.0">id ipſum quoq; al<lb/>teri rationi contintingit, quam ex rectiori & obliquiori motu de<lb/>ducunt. </s>

<s id="id.2.1.17.3.1.5.0">Idcirco antequàm vlterius progrediar, o&longs;tendam primùm <lb/>pondus, quò propius e&longs;t ip&longs;is FG, minus grauitare; tum qua<lb/>tenus in eo &longs;itu, in quo reperitur, manet: tum quatenus ab eo <lb/>recedit. </s>

<s id="id.2.1.17.3.1.4.0">Præterea quæcunq; ex velociori, & rectiori motu per<lb/>ſuadent pondus in A grauius eſſe, quàm in D; non ideo de<lb/>monſtrant pondus in A, quatenus eſt in A, grauius eſſe pon<lb/>dere in D, quatenus eſt in D; ſed quatenus à punctis DA rece<lb/>dit. </s>

<s id="id.2.1.17.3.1.6.0">&longs;imulq; fal&longs;um e&longs;&longs;e, pondus in A grauius e&longs;&longs;e, quàm in <lb/>alio &longs;itu. </s>

<s id="id.2.1.17.3.1.5.0">Idcirco antequàm vlterius progrediar, oſtendam primùm <lb/>pondus, quò propius eſt ipſis FG, minus grauitare; tum qua<lb/>tenus in eo ſitu, in quo reperitur, manet: tum quatenus ab eo <lb/>recedit. </s>

<s id="id.2.1.17.3.1.6.0">ſimulq; falſum eſſe, pondus in A grauius eſſe, quàm in <lb/>alio ſitu. </s>

<s id="id.2.1.17.5.1.1.0">Producatur FG vſq; ad mundi cen<lb/>trum, quod ſit S. </s>

<s id="id.2.1.17.5.1.1.0">Producatur FG v&longs;q; ad mundi cen<lb/>trum, quod &longs;it S. </s>

<s id="N10D16">& à puncto S circu<lb/>lum AFBG contingens ducatur. </s>

<s>& à puncto S circu<lb/>lum AFBG contingens ducatur. </s>

<s id="id.2.1.17.5.1.2.0">neq; <lb/>enim linea à puncto S circulum con<lb/>tingere poteſt in A; nam ducta AS <lb/>triangulum ACS duos haberet angu<lb/>los rectos, nempè SAC ACS, quod <arrow.to.target n="note33" xlink:type="simple"/>

<s id="id.2.1.17.5.1.2.0">neq; <lb/>enim linea à puncto S circulum con<lb/>tingere pote&longs;t in A; nam ducta AS <lb/>triangulum ACS duos haberet angu<lb/>los rectos, nempè SAC ACS, quod <arrow.to.target n="note33"></arrow.to.target><lb/>e&longs;t impo&longs;sibile. </s>

<lb/>eſt impoſsibile. </s>

<s id="id.2.1.17.5.1.3.0">neq; &longs;upra punctum A <lb/>in circumferentia AF continget; cir<lb/>culum enim &longs;ecaret. </s>

<s id="id.2.1.17.5.1.3.0">neq; ſupra punctum A <lb/>in circumferentia AF continget; cir<lb/>culum enim ſecaret. </s>

<s id="id.2.1.17.5.1.4.0">tanget igitur in<lb/>fra, &longs;itq; SO. </s>

<s id="id.2.1.17.5.1.4.0">tanget igitur in<lb/>fra, ſitq; SO. </s>

<s>connectantur deinde SD <lb/>SL, quæ circumferentiam AOG in <lb/>punctis KH &longs;ecent. </s>

<s id="N10D36">connectantur deinde SD <lb/>SL, quæ circumferentiam AOG in <lb/>punctis KH ſecent. </s>

<s id="id.2.1.17.5.1.5.0">& Ck CH con<lb/>iungantur. </s>

<s id="id.2.1.17.5.1.6.0">Et quoniam pondus, quanto <lb/>propius eſt ipſi F, magis quoque inni<lb/>titur centro; vt pondus in D magis ver<lb/>ſionis puncto C innititur tanquam <lb/>centro; hoc eſt in D magis ſupra li<lb/>neam CD grauitat, quàm ſi eſſet in A <lb/>ſupra lineam CA; & adhuc magis in <lb/>L ſupra lineam CL; Nam cùm tres <lb/>anguli cuiuſcunq; trianguli duobus re<lb/>

<s id="id.2.1.17.5.1.6.0">Et quoniam pondus, quanto <lb/>propius e&longs;t ip&longs;i F, magis quoque inni<lb/>titur centro; vt pondus in D magis ver<lb/>&longs;ionis puncto C innititur tanquam <lb/>centro; hoc e&longs;t in D magis &longs;upra li<lb/>neam CD grauitat, quàm &longs;i e&longs;&longs;et in A <lb/>&longs;upra lineam CA; & adhuc magis in <lb/>L &longs;upra lineam CL; Nam cùm tres <lb/>anguli cuiu&longs;cunq; trianguli duobus re<lb/><figure id="id.036.01.033.1.jpg" xlink:href="036/01/033/1.jpg"></figure><lb/>ctis &longs;int æquales, & trianguli DCk æquicruris angulus DCk <lb/>minor &longs;it angulo LCH æquicruris trianguli LCH: erunt reli<lb/>qui ad ba&longs;im &longs;cilicet CDk CkD &longs;imul &longs;umpti reliquis CLH <lb/>CHL maiores. </s>

<s id="id.2.1.17.5.1.7.0">& horum dimidii; hoc e&longs;t angulus CDS angu<lb/>lo CLS maior erit. </s>

<lb/>ctis ſint æquales, & trianguli DCk æquicruris angulus DCk <lb/>minor ſit angulo LCH æquicruris trianguli LCH: erunt reli<lb/>qui ad baſim ſcilicet CDk CkD ſimul ſumpti reliquis CLH <lb/>CHL maiores. </s>

<s id="id.2.1.17.5.1.8.0">cùm itaq; CLS &longs;it minor, linea CL ma<lb/>gis adhærebit motui naturali ponderis in L pror&longs;us &longs;oluti. </s>

<s id="id.2.1.17.5.1.7.0">& horum dimidii; hoc eſt angulus CDS angu<lb/>lo CLS maior erit. </s>

<s id="id.2.1.17.5.1.9.0">hoc <lb/>e&longs;t lineæ LS, quàm CD motui DS. </s>

<s id="id.2.1.17.5.1.8.0">cùm itaq; CLS ſit minor, linea CL ma<lb/>gis adhærebit motui naturali ponderis in L prorſus ſoluti. </s>

<s id="id.2.1.17.5.1.9.0.a">pondus enim in L <expan abbr="libe">li</expan><lb/>berum, atq; &longs;olutum in centrum mundi per LS moueretur, pon<lb/>dusq; in D per DS. </s>

<s id="id.2.1.17.5.1.9.0">hoc <lb/>eſt lineæ LS, quàm CD motui DS. </s>

<s id="id.2.1.17.5.1.9.0.b">quoniam verò pondus in L totum &longs;uper LS <lb/>grauitat, in D verò &longs;uper DS: pondus in L magis &longs;upra lineam <lb/>CL grauitabit, quàm exi&longs;tens in D &longs;upra lineam DC. </s>

<s id="id.2.1.17.5.1.9.0.a">pondus enim in L <expan abbr="libe">li</expan><lb/>berum, atq; ſolutum in centrum mundi per LS moueretur, pon<lb/>dusq; in D per DS. </s>

<s>ergo <lb/>linea CL pondus magis &longs;u&longs;tentabit, quàm linea CD. </s>

<s id="id.2.1.17.5.1.9.0.b">quoniam verò pondus in L totum ſuper LS <lb/>grauitat, in D verò ſuper DS: pondus in L magis ſupra lineam <lb/>CL grauitabit, quàm exiſtens in D ſupra lineam DC. </s>

<s id="id.2.1.17.5.1.9.0.c">Eodem<lb/>qué modo, quò pondus propius fuerit ip&longs;i F, magis ob hanc cau<lb/>&longs;am à linea CL &longs;u&longs;tineri o&longs;tendetur; &longs;emper enim angulus CLS <pb xlink:href="036/01/034.jpg"/>minor e&longs;&longs;et. </s>

<s id="N10D83">ergo <lb/>linea CL pondus magis ſuſtentabit, quàm linea CD. </s>

<s id="id.2.1.17.5.1.10.0">quod etiam patet; quia &longs;i <lb/>lineæ CL, & LS in vnam coinciderent <lb/>lineam, quod euenit in FCS; tunc linea <lb/>CF totum &longs;u&longs;tineret pondus in F, im<lb/>mobilemq; redderet: neq; vllam pror<lb/>&longs;us grauitatem in circumferentia circu<lb/>li haberet. </s>

<s id="id.2.1.17.5.1.9.0.c">Eodem<lb/>qué modo, quò pondus propius fuerit ipſi F, magis ob hanc cau<lb/>ſam à linea CL ſuſtineri oſtendetur; ſemper enim angulus CLS <pb xlink:href="036/01/034.jpg" xlink:type="simple"/>minor eſſet. </s>

<s id="id.2.1.17.5.1.11.0">Idem ergo pondus propter <lb/>&longs;ituum diuer&longs;itatem grauius, leuiu&longs;q; erit. </s>

<s id="id.2.1.17.5.1.10.0">quod etiam patet; quia ſi <lb/>lineæ CL, & LS in vnam coinciderent <lb/>lineam, quod euenit in FCS; tunc linea <lb/>CF totum ſuſtineret pondus in F, im<lb/>mobilemq; redderet: neq; vllam pror<lb/>ſus grauitatem in circumferentia circu<lb/>li haberet. </s>

<s id="id.2.1.17.5.1.12.0"><lb/>non autem quia ratione &longs;itus interdum <lb/>maiorem re vera acquirat grauitatem, <lb/>interdum verò amittat, cùm eiu&longs;dem &longs;it <lb/>&longs;emper grauitatis, vbicunque reperiatur; <lb/>&longs;ed quia magis, minu&longs;uè in circumferen<lb/>tia grauitat, vt in D magis &longs;upra circum<lb/>ferentiam DA grauitat, quàm in L &longs;upra <lb/>circumferentiam LD. </s>

<s id="id.2.1.17.5.1.11.0">Idem ergo pondus propter <lb/>ſituum diuerſitatem grauius, leuiuſq; erit. </s>

<s id="id.2.1.17.5.1.12.0.a">hoc e&longs;t, &longs;i pon<lb/>dus à circumferentiis, recti&longs;q; lineis &longs;u<lb/>&longs;tineatur; circumferentia AD magis &longs;u<lb/>&longs;tinebit pondus in D, quàm circumfe<lb/>rentia DL pondere exi&longs;tente in <emph type="italics"/>L.<emph.end type="italics"/> mi<lb/>nus enim coadiuuat CD, quàm CL. </s>

<s id="id.2.1.17.5.1.12.0.b"><lb/>Præterea quando pondus e&longs;t in L, &longs;i e&longs;<lb/><figure id="id.036.01.034.1.jpg" xlink:href="036/01/034/1.jpg"></figure><lb/>&longs;et omnino liberum, penitu&longs;q; &longs;olutum, deor&longs;um per LS moueretur; <lb/>ni&longs;i à linea CL prohiberetur, quæ pondus in L vltra lineam LS per <lb/><expan abbr="circumferentiã">circumferentiam</expan> LD moueri cogit; ip&longs;umq; quodammodo impellit, <lb/>impellendoq; pondus partim &longs;u&longs;tentabit. </s>

<lb/>non autem quia ratione ſitus interdum <lb/>maiorem re vera acquirat grauitatem, <lb/>interdum verò amittat, cùm eiuſdem ſit <lb/>ſemper grauitatis, vbicunque reperiatur; <lb/>ſed quia magis, minuſuè in circumferen<lb/>tia grauitat, vt in D magis ſupra circum<lb/>ferentiam DA grauitat, quàm in L ſupra <lb/>circumferentiam LD. </s>

<s id="id.2.1.17.5.1.13.0">ni&longs;i enim &longs;u&longs;tineret, ip&longs;iq; <lb/>reniteretur, deor&longs;um per lineam LS moueretur, non autem per <lb/>circumferentiam LD. </s>

<s id="id.2.1.17.5.1.12.0.a">hoc eſt, ſi pon<lb/>dus à circumferentiis, rectiſq; lineis ſu<lb/>ſtineatur; circumferentia AD magis ſu<lb/>ſtinebit pondus in D, quàm circumfe<lb/>rentia DL pondere exiſtente in <emph type="italics"/>L.<emph.end type="italics"/> mi<lb/>nus enim coadiuuat CD, quàm CL. </s>

<s>&longs;imiliter CD ponderi in D renititur, cùm <lb/>illud per circumferentiam DA moueri cogat. </s>

<s id="id.2.1.17.5.1.14.0">eodemq; modo <lb/>exi&longs;tente pondere in A, linea CA pondus vltra lineam AS per <lb/>circumferentiam AO moueri compellet. </s>

<lb/>Præterea quando pondus eſt in L, ſi eſ<lb/>

<s id="id.2.1.17.5.1.15.0">e&longs;t enim angulus CAS <lb/>acutus; cùm angulus ACS &longs;it rectus. </s>

<s id="id.2.1.17.5.1.16.0">lineæ igitur CA CD ali<lb/>qua ex parte, non tamen ex æquo ponderi renituntur. </s>

<lb/>ſet omnino liberum, penituſq; ſolutum, deorſum per LS moueretur; <lb/>niſi à linea CL prohiberetur, quæ pondus in L vltra lineam LS per <lb/>

<s id="id.2.1.17.5.1.17.0">& quotie&longs; <lb/>cunque angulus in circumferentia circuli à lineis à centro <lb/>mundi S, & centro C prodeuntibus, fuerit acutus; idem eue<lb/>nire &longs;imiliter o&longs;tendemus. </s>

<expan abbr="circumferentiã">circumferentiam</expan> LD moueri cogit; ipſumq; quodammodo impellit, <lb/>impellendoq; pondus partim ſuſtentabit. </s>

<s id="id.2.1.17.5.1.18.0">Quoniam autem mixtus angulus CLD <pb n="11" xlink:href="036/01/035.jpg"/>æqualis e&longs;t angulo CDA, cùm à &longs;emidiametris, eademq; circumfe<lb/>rentia contineantur; & angulus C<emph type="italics"/>L<emph.end type="italics"/>S angulo CDS e&longs;t minor; <lb/>erit reliquus <emph type="italics"/>S<emph.end type="italics"/>LD reliquo SDA maior. </s>

<s id="id.2.1.17.5.1.13.0">niſi enim ſuſtineret, ipſiq; <lb/>reniteretur, deorſum per lineam LS moueretur, non autem per <lb/>circumferentiam LD. </s>

<s id="id.2.1.17.5.1.19.0">quare circumferentia <lb/>DA, hoc e&longs;t de&longs;cen&longs;us ponderis in D propior erit motui natu<lb/>rali ponderis in D &longs;oluti, lineæ &longs;cilicet DS, quàm circumferen<lb/>tia LD lineæ LS. </s>

<s id="N10DE7">ſimiliter CD ponderi in D renititur, cùm <lb/>illud per circumferentiam DA moueri cogat. </s>

<s id="id.2.1.17.5.1.19.0.a">minus igitur linea CD ponderi in D reniti<lb/>tur, quàm linea CL ponderi in L. </s>

<s id="id.2.1.17.5.1.14.0">eodemq; modo <lb/>exiſtente pondere in A, linea CA pondus vltra lineam AS per <lb/>circumferentiam AO moueri compellet. </s>

<s id="id.2.1.17.5.1.19.0.b">linea ideo CD minus &longs;u&longs;tinet, <lb/>quàm CL; pondu&longs;q; magis liberum erit in D, quàm in L: <lb/>cùm pondus naturaliter magis per DA moueatur, quàm per LD. <lb/></s>

<s id="id.2.1.17.5.1.15.0">eſt enim angulus CAS <lb/>acutus; cùm angulus ACS ſit rectus. </s>

<s>quare grauius erit in D, quàm in L. </s>

<s id="id.2.1.17.5.1.16.0">lineæ igitur CA CD ali<lb/>qua ex parte, non tamen ex æquo ponderi renituntur. </s>

<s>&longs;imiliter o&longs;tendemus CA <lb/>minus &longs;u&longs;tinere, quàm CD: pondu&longs;q; magis in A, quàm in D li<lb/>berum, grauiu&longs;q, e&longs;&longs;e. </s>

<s id="id.2.1.17.5.1.17.0">& quotieſ <lb/>cunque angulus in circumferentia circuli à lineis à centro <lb/>mundi S, & centro C prodeuntibus, fuerit acutus; idem eue<lb/>nire ſimiliter oſtendemus. </s>

<s id="id.2.1.17.5.1.20.0">Ex parte deinde inferiori ob ea&longs;dem cau&longs;as, <lb/>quò pondus propius fuerit ip&longs;i G, magis detinebitur, vt in H ma<lb/>gis à linea CH, quàm in K à linea CK. </s>

<s id="id.2.1.17.5.1.18.0">Quoniam autem mixtus angulus CLD <pb n="11" xlink:href="036/01/035.jpg" xlink:type="simple"/>æqualis eſt angulo CDA, cùm à ſemidiametris, eademq; circumfe<lb/>rentia contineantur; & angulus C<emph type="italics"/>L<emph.end type="italics"/>S angulo CDS eſt minor; <lb/>erit reliquus <emph type="italics"/>S<emph.end type="italics"/>LD reliquo SDA maior. </s>

<s>nam cùm angulus CHS <lb/>maior &longs;it angulo CkS, ad rectitudinem magis appropinquabunt <arrow.to.target n="note34"></arrow.to.target><lb/>&longs;e &longs;e lineæ CH HS, quàm Ck kS; atq; ob id pondus magis deti<lb/>nebitur à CH, quàm à Ck &longs;i enim CH HS in vnam conuenirent <lb/>lineam vt euenit pondere exi&longs;tente in G; tunc linea CG totum &longs;u<lb/>&longs;tineret' pondus in G, ita vt immobilis per&longs;i&longs;teret. </s>

<s id="id.2.1.17.5.1.19.0">quare circumferentia <lb/>DA, hoc eſt deſcenſus ponderis in D propior erit motui natu<lb/>rali ponderis in D ſoluti, lineæ ſcilicet DS, quàm circumferen<lb/>tia LD lineæ LS. </s>

<s id="id.2.1.17.5.1.21.0">quò igitur <lb/>minor erit angulus linea CH, & de&longs;cen&longs;u ponderis &longs;oluti, &longs;cilicet <lb/>HS contentus, eò minus quoq; eiu&longs;modi linea pondus detinebit. </s>

<s id="id.2.1.17.5.1.19.0.a">minus igitur linea CD ponderi in D reniti<lb/>tur, quàm linea CL ponderi in L. </s>

<s id="id.2.1.17.5.1.22.0"><lb/>& vbi minus detinebitur, ibi magis liberum, grauiu&longs;q; exi&longs;tet. </s>

<s id="id.2.1.17.5.1.19.0.b">linea ideo CD minus ſuſtinet, <lb/>quàm CL; ponduſq; magis liberum erit in D, quàm in L: <lb/>cùm pondus naturaliter magis per DA moueatur, quàm per LD. <lb/>

<s id="id.2.1.17.5.1.23.0"><lb/>Præterea &longs;i pondus in k liberum e&longs;&longs;et, atq; &longs;olutum, per lineam <lb/>k S moueretur; à linea verò Ck prohibetur, quæ cogit pondus <lb/>citrà lineam k S per circumferentiam k H moueri. </s>

</s>

<s id="id.2.1.17.5.1.24.0">ip&longs;um enim <lb/>quodammodo retrahit, retrahendoq; &longs;u&longs;tinet. </s>

<s id="N10E33">quare grauius erit in D, quàm in L. </s>

<s id="id.2.1.17.5.1.25.0">ni&longs;i enim &longs;u&longs;tineret. </s>

<s id="N10E35">ſimiliter oſtendemus CA <lb/>minus ſuſtinere, quàm CD: ponduſq; magis in A, quàm in D li<lb/>berum, grauiuſq, eſſe. </s>

<s id="id.2.1.17.5.1.26.0"><lb/>pondus deor&longs;um per rectam k S moueretur, non autem per cir<lb/>cumferentiam k H. </s>

<s id="id.2.1.17.5.1.20.0">Ex parte deinde inferiori ob eaſdem cauſas, <lb/>quò pondus propius fuerit ipſi G, magis detinebitur, vt in H ma<lb/>gis à linea CH, quàm in K à linea CK. </s>

<s>&longs;imiliter CH pondus retinet, cùm per circum<lb/><expan abbr="ferentiã">ferentiam</expan> HG moueri compellat. </s>

<s id="N10E42">nam cùm angulus CHS <lb/>maior ſit angulo CkS, ad rectitudinem magis appropinquabunt <arrow.to.target n="note34" xlink:type="simple"/>

<s id="id.2.1.17.5.1.27.0"><expan abbr="Quoniã">Quoniam</expan> autem angulus CHS ma<lb/>ior e&longs;t angulo CKS, <expan abbr="d&etilde;ptis">demptis</expan> æqualibus angulis CHG CkH; erit <lb/>reliquus SHG reliquo SKH maior. </s>

<lb/>ſe ſe lineæ CH HS, quàm Ck kS; atq; ob id pondus magis deti<lb/>nebitur à CH, quàm à Ck ſi enim CH HS in vnam conuenirent <lb/>lineam vt euenit pondere exiſtente in G; tunc linea CG totum ſu<lb/>ſtineret' pondus in G, ita vt immobilis perſiſteret. </s>

<s id="id.2.1.17.5.1.28.0">circumferentia igitur k H, hoc <lb/>e&longs;t de&longs;cen&longs;us ponderis in k, propior erit motui naturali ponderis in <lb/>k &longs;oluti, hoc e&longs;t lineæ k S, quàm circumferentia HG lineæ HS. </s>

<s id="id.2.1.17.5.1.21.0">quò igitur <lb/>minor erit angulus linea CH, & deſcenſu ponderis ſoluti, ſcilicet <lb/>HS contentus, eò minus quoq; eiuſmodi linea pondus detinebit. </s>

<s>mi<lb/>nus idcirco detinet linea Ck, quàm CH: cùm pondus naturali<lb/>ter magis moueatur per k H, quàm per HG. </s>

<s id="id.2.1.17.5.1.28.0.a">&longs;imili ratione o&longs;ten<lb/>detur, quò minor erit angulus SkH, lineam Ck minus &longs;u&longs;tinere. </s>

<lb/>& vbi minus detinebitur, ibi magis liberum, grauiuſq; exiſtet. </s>

<s id="id.2.1.17.5.1.29.0"><pb xlink:href="036/01/036.jpg"/>exi&longs;tente igitur pondere in O, quia angu<lb/>lus SOC non &longs;olum minor e&longs;t angulo <lb/>CKS, verùm etiam omnium angulorum <lb/>à punctis CS prodeuntium, verticemq; <lb/>in circumferuntia OkG habentium mi<lb/>nimus; erit <expan abbr="anglus">angulus</expan> SOK, & angulo SkH, <lb/>& eiu&longs;modi omnium minimus. </s>

<s id="id.2.1.17.5.1.30.0">ergo de<lb/>&longs;cen&longs;us ponderis in O propior erit motui <lb/>naturali ip&longs;ius in O &longs;oluti, quàm in alio <lb/>&longs;itu circumferentiæ OkG. </s>

<lb/>Præterea ſi pondus in k liberum eſſet, atq; ſolutum, per lineam <lb/>k S moueretur; à linea verò Ck prohibetur, quæ cogit pondus <lb/>citrà lineam k S per circumferentiam k H moueri. </s>

<s>lineaq; CO <lb/>minus pondus &longs;u&longs;tinebit, quàm &longs;i pon<lb/>dus in quouis alio fuerit &longs;itu eiu&longs;dem cir<lb/>cumferentiæ OG. </s>

<s id="id.2.1.17.5.1.24.0">ipſum enim <lb/>quodammodo retrahit, retrahendoq; ſuſtinet. </s>

<s id="id.2.1.17.5.1.30.0.a">&longs;imiliter quoniam con<lb/>tingentiæ angulus SOk, & angulo SDA, <lb/>& SAO, ac quibu&longs;cunq; &longs;imilibus e&longs;t mi <lb/>nor; erit de&longs;cen&longs;us ponderis in O motui <lb/>naturali ip&longs;ius ponderis in O &longs;oluti pro<lb/>pior, quàm in alio &longs;itu circumferentiæ <lb/>ODF. </s>

<s id="id.2.1.17.5.1.25.0">niſi enim ſuſtineret. </s>

<s id="id.2.1.17.5.1.30.0.b">Præterea quoniam linea GO pon<lb/>dus in O dum deor&longs;um mouetur, impelle<lb/>re non pote&longs;t, ita vt vltra lineam OS mo<lb/>ueatur; cùm linea OS circulum non &longs;ecet, <lb/><figure id="id.036.01.036.1.jpg" xlink:href="036/01/036/1.jpg"></figure><lb/>&longs;ed contingat; angulu&longs;q; SOC &longs;it rectus, & non acutus; pondus <lb/>in O nihil &longs;upra lineam CO grauitabit. </s>

<lb/>pondus deorſum per rectam k S moueretur, non autem per cir<lb/>cumferentiam k H. </s>

<s id="N10E72">ſimiliter CH pondus retinet, cùm per circum<lb/>

<expan abbr="ferentiã">ferentiam</expan> HG moueri compellat. </s>

<expan abbr="Quoniã">Quoniam</expan> autem angulus CHS ma<lb/>ior eſt angulo CKS, <expan abbr="dẽptis">demptis</expan> æqualibus angulis CHG CkH; erit <lb/>reliquus SHG reliquo SKH maior. </s>

<s id="id.2.1.17.5.1.28.0">circumferentia igitur k H, hoc <lb/>eſt deſcenſus ponderis in k, propior erit motui naturali ponderis in <lb/>k ſoluti, hoc eſt lineæ k S, quàm circumferentia HG lineæ HS. </s>

<s id="N10E8E">mi<lb/>nus idcirco detinet linea Ck, quàm CH: cùm pondus naturali<lb/>ter magis moueatur per k H, quàm per HG. </s>

<s id="id.2.1.17.5.1.28.0.a">ſimili ratione oſten<lb/>detur, quò minor erit angulus SkH, lineam Ck minus ſuſtinere. </s>

<pb xlink:href="036/01/036.jpg" xlink:type="simple"/>exiſtente igitur pondere in O, quia angu<lb/>lus SOC non ſolum minor eſt angulo <lb/>CKS, verùm etiam omnium angulorum <lb/>à punctis CS prodeuntium, verticemq; <lb/>in circumferuntia OkG habentium mi<lb/>nimus; erit <expan abbr="anglus">angulus</expan> SOK, & angulo SkH, <lb/>& eiuſmodi omnium minimus. </s>

<s id="id.2.1.17.5.1.30.0">ergo de<lb/>ſcenſus ponderis in O propior erit motui <lb/>naturali ipſius in O ſoluti, quàm in alio <lb/>ſitu circumferentiæ OkG. </s>

<s id="N10EB8">lineaq; CO <lb/>minus pondus ſuſtinebit, quàm ſi pon<lb/>dus in quouis alio fuerit ſitu eiuſdem cir<lb/>cumferentiæ OG. </s>

<s id="id.2.1.17.5.1.30.0.a">ſimiliter quoniam con<lb/>tingentiæ angulus SOk, & angulo SDA, <lb/>& SAO, ac quibuſcunq; ſimilibus eſt mi <lb/>nor; erit deſcenſus ponderis in O motui <lb/>naturali ipſius ponderis in O ſoluti pro<lb/>pior, quàm in alio ſitu circumferentiæ <lb/>ODF. </s>

<s id="id.2.1.17.5.1.30.0.b">Præterea quoniam linea GO pon<lb/>dus in O dum deorſum mouetur, impelle<lb/>re non poteſt, ita vt vltra lineam OS mo<lb/>ueatur; cùm linea OS circulum non ſecet, <lb/>

<lb/>ſed contingat; anguluſq; SOC ſit rectus, & non acutus; pondus <lb/>in O nihil ſupra lineam CO grauitabit. </s>

<s id="id.2.1.17.5.1.31.0">neq; centro innitetur. </s>

<s id="id.2.1.17.5.1.32.0">quem <lb/>admodum in quouis alio puncto ſupra O accideret. </s>

<s id="id.2.1.17.5.1.32.0">quem <lb/>admodum in quouis alio puncto &longs;upra O accideret. </s>

<s id="id.2.1.17.5.1.33.0">erit igitur pon<lb/>dus in O magis ob has cauſas liberum, atq; ſolutum in hoc ſitu, <lb/>quàm in quouis alio circumferentiæ FOG. </s>

<s id="id.2.1.17.5.1.33.0">erit igitur pon<lb/>dus in O magis ob has cau&longs;as liberum, atq; &longs;olutum in hoc &longs;itu, <lb/>quàm in quouis alio circumferentiæ FOG. </s>

<s id="N10EF1">ac idcirco in hoc <lb/>grauius erit, hoc eſt magis grauitabit, quàm in alio ſitu. </s>

<s>ac idcirco in hoc <lb/>grauius erit, hoc e&longs;t magis grauitabit, quàm in alio &longs;itu. </s>

<s id="id.2.1.17.5.1.34.0">& quò <lb/>propius fuerit ipſi O remotiori grauius erit. </s>

<s id="id.2.1.17.5.1.34.0">& quò <lb/>propius fuerit ip&longs;i O remotiori grauius erit. </s>

<s id="id.2.1.17.5.1.35.0">lineaq; CO horizonti <lb/>æquidiſtans erit. </s>

<s id="id.2.1.17.5.1.35.0">lineaq; CO horizonti <lb/>æquidi&longs;tans erit. </s>

<s id="id.2.1.17.5.1.36.0">non tamen puncti C horizonti (vt ipſi exiſti<lb/>mant) ſed ponderis in O conſtituti, cùm ex centro grauitatis <lb/>ponderis ſummendus ſit horizon. </s>

<s id="id.2.1.17.5.1.36.0">non tamen puncti C horizonti (vt ip&longs;i exi&longs;ti<lb/>mant) &longs;ed ponderis in O con&longs;tituti, cùm ex centro grauitatis <lb/>ponderis &longs;ummendus &longs;it horizon. </s>

<s id="id.2.1.17.5.1.37.0">quæ omnia demonſtrare opor<lb/>tebat. </s>

<s id="id.2.1.17.5.1.37.0">quæ omnia demon&longs;trare opor<lb/>tebat. </s>

<s id="id.2.1.18.1.1.1.0"><margin.target id="note33"></margin.target>18 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<margin.target id="note33"/>18 <emph type="italics"/>Tertii.<emph.end type="italics"/>

<s id="id.2.1.18.1.1.2.0"><margin.target id="note34"></margin.target>21 <emph type="italics"/>primi.<emph.end type="italics"/></s>

</s>

<margin.target id="note34"/>21 <emph type="italics"/>primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.19.1.2.1.0">Si autem libræ brachium ipſo CO <lb/>fuerit maius, putá quantitate CD; erit <lb/>quoq; pondus in O grauius. </s>

<s id="id.2.1.19.1.2.1.0">Si autem libræ brachium ip&longs;o CO <lb/>fuerit maius, putá quantitate CD; erit <lb/>quoq; pondus in O grauius. </s>

<s id="id.2.1.19.1.2.2.0">circulus de<lb/>ſcribatur OH, cuius centrum ſit D, ſe<arrow.to.target n="note35" xlink:type="simple"/>

<s id="id.2.1.19.1.2.2.0">circulus de<lb/>&longs;cribatur OH, cuius centrum &longs;it D, &longs;e<arrow.to.target n="note35"></arrow.to.target><lb/>midiameterq; DO. </s>

<lb/>midiameterq; DO. </s>

<s>tanget circulus OH <lb/>circulum FOG in puncto O, lineamq; <arrow.to.target n="note36"></arrow.to.target><lb/>OS, quæ ponderis in O rectus, natura<lb/>li&longs;q; e&longs;t de&longs;cen&longs;us, in eodem puncto con<lb/>tinget. </s>

<s id="N10F3A">tanget circulus OH <lb/>circulum FOG in puncto O, lineamq; <arrow.to.target n="note36" xlink:type="simple"/>

<s id="id.2.1.19.1.2.3.0">& quoniam angulus SOH mi<lb/>nor e&longs;t angulo SOG, erit de&longs;cen&longs;us <lb/>ponderis in O per circumferentiam OH <lb/>motui naturali OS propior, quàm per <lb/>circumferentiam OG. </s>

<lb/>OS, quæ ponderis in O rectus, natura<lb/>liſq; eſt deſcenſus, in eodem puncto con<lb/>tinget. </s>

<s id="id.2.1.19.1.2.3.0.a">magis ergo li<lb/>berum, atq; &longs;olutum, ac per con&longs;equens <lb/>grauius erit in O, centro libræ exi&longs;ten<lb/>te in D, quàm in C. </s>

<s id="id.2.1.19.1.2.3.0">& quoniam angulus SOH mi<lb/>nor eſt angulo SOG, erit deſcenſus <lb/>ponderis in O per circumferentiam OH <lb/>motui naturali OS propior, quàm per <lb/>circumferentiam OG. </s>

<s>&longs;imiliter o&longs;ten<lb/>detur, quò maius fuerit brachium DO, <lb/>pondus in O adhuc grauius e&longs;&longs;e. <figure id="id.036.01.037.1.jpg" xlink:href="036/01/037/1.jpg"></figure></s>

<s id="id.2.1.19.1.2.3.0.a">magis ergo li<lb/>berum, atq; ſolutum, ac per conſequens <lb/>grauius erit in O, centro libræ exiſten<lb/>te in D, quàm in C. </s>

<s id="N10F5B">ſimiliter oſten<lb/>detur, quò maius fuerit brachium DO, <lb/>pondus in O adhuc grauius eſſe. <figure id="id.036.01.037.1.jpg" place="text" xlink:href="036/01/037/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.19.3.1.1.0">Si verò idem circulus AFBG, <lb/>cuius centrum ſit R, propius fuerit <lb/>mundi centro S; circulumqué à pun<lb/>cto S ducatur contingens ST; punctum <lb/>T (vbi grauius eſt pondus) magis <lb/>à puncto A diſtabit, quàm punctum <lb/>O. ducantur enim à punctis OT ipſi <lb/>CS perpendiculares OMTN; conne<lb/>ctanturq; RT; ſitq; centrum R in li<lb/>nea CS; lineaq; ARB ipſi ACB æqui <lb/>

<s id="id.2.1.19.3.1.1.0">Si verò idem circulus AFBG, <lb/>cuius centrum &longs;it R, propius fuerit <lb/>mundi centro S; circulumqué à pun<lb/>cto S ducatur contingens ST; punctum <lb/>T (vbi grauius e&longs;t pondus) magis <lb/>à puncto A di&longs;tabit, quàm punctum <lb/>O. ducantur enim à punctis OT ip&longs;i <lb/>CS perpendiculares OMTN; conne<lb/>ctanturq; RT; &longs;itq; centrum R in li<lb/>nea CS; lineaq; ARB ip&longs;i ACB æqui <lb/><arrow.to.target n="note37"></arrow.to.target>di&longs;tans. </s>

<arrow.to.target n="note37" xlink:type="simple"/>diſtans. </s>

<s id="id.2.1.19.3.1.2.0">Quoniam igitur triangula COS <lb/>RTS &longs;unt rectangula; erit SC ad CO, <lb/>vt CO ad CM. </s>

<s id="id.2.1.19.3.1.2.0">Quoniam igitur triangula COS <lb/>RTS ſunt rectangula; erit SC ad CO, <lb/>vt CO ad CM. </s>

<s>&longs;imiliter SR ad RT, <lb/>vt RT ad RN. </s>

<s id="N10F8D">ſimiliter SR ad RT, <lb/>vt RT ad RN. </s>

<s>cùm itaq; &longs;it RT ip<lb/><arrow.to.target n="note38"></arrow.to.target>&longs;i CO æqualis, & SC ip&longs;a SR maior: <lb/>maiorem habebit proportionem SC <lb/>ad CO, quàm SR ad RT. </s>

<s>quare ma<lb/>iorem quoq; proportionem habebit <lb/>CO ad CM, quàm RT ad RN. </s>

<arrow.to.target n="note38" xlink:type="simple"/>ſi CO æqualis, & SC ipſa SR maior: <lb/>maiorem habebit proportionem SC <lb/>ad CO, quàm SR ad RT. </s>

<s id="N10F9C">quare ma<lb/>iorem quoq; proportionem habebit <lb/>CO ad CM, quàm RT ad RN. </s>

<s>&longs;ecetur <lb/>igitur RN in P, ita vt RP &longs;it ip&longs;i <lb/><figure id="id.036.01.038.1.jpg" xlink:href="036/01/038/1.jpg"></figure><lb/>CM æqualis; & à puncto P ip&longs;is MONT æquidi&longs;tans ducatur <lb/>PQ, quæ circumferentiam AT &longs;ecet in Q: deniq; connectatur <lb/>RQ. </s>

<s>quoniam enim duæ CO CM duabus RQRP &longs;unt æqua<lb/><arrow.to.target n="note40"></arrow.to.target>les, & angulus CMO angulo RPQ e&longs;t æqualis; erit & angu<lb/>lus MCO angulo PRQ æqualis. </s>

<arrow.to.target n="note39" xlink:type="simple"/>nor ergo erit CM, quàm RN. </s>

<s id="id.2.1.19.3.1.3.0">angulus autem MCA rectus <lb/><arrow.to.target n="note41"></arrow.to.target>recto PRA e&longs;t æqualis; ergo reliquus OCA reliquo QRA <lb/>æqualis, & circumferentia OA circumferentiæ QA æqualis quo<lb/>que erit. </s>

<s id="N10FAA">ſecetur <lb/>igitur RN in P, ita vt RP ſit ipſi <lb/>

<s id="id.2.1.19.3.1.4.0">punctum idcirco T, quia magis à puncto A di&longs;tat, <lb/>quàm Q; magis quoq; à puncto A di&longs;tabit, quàm punctum O. <lb/></s>

<s>&longs;imiliter o&longs;tendetur, quò propius fuerit circulus mundi centro, eun<lb/>dem magis di&longs;tare. </s>

<lb/>CM æqualis; & à puncto P ipſis MONT æquidiſtans ducatur <lb/>PQ, quæ circumferentiam AT ſecet in Q: deniq; connectatur <lb/>RQ. </s>

<s id="id.2.1.19.3.1.5.0">atq; ita vt prius demon&longs;trabitur pondus in cir<lb/>cumferentia TAF centro R inniti, in circumferentia verò TG <lb/>à linea detineri; atq; in puncto T grauius e&longs;&longs;e. </s>

<s id="N10FBA">quoniam enim duæ CO CM duabus RQRP ſunt æqua<lb/>

<arrow.to.target n="note40" xlink:type="simple"/>les, & angulus CMO angulo RPQ eſt æqualis; erit & angu<lb/>lus MCO angulo PRQ æqualis. </s>

<s id="id.2.1.19.3.1.3.0">angulus autem MCA rectus <lb/>

<arrow.to.target n="note41" xlink:type="simple"/>recto PRA eſt æqualis; ergo reliquus OCA reliquo QRA <lb/>æqualis, & circumferentia OA circumferentiæ QA æqualis quo<lb/>que erit. </s>

<s id="id.2.1.19.3.1.4.0">punctum idcirco T, quia magis à puncto A diſtat, <lb/>quàm Q; magis quoq; à puncto A diſtabit, quàm punctum O. <lb/>

</s>

<s id="N10FD5">ſimiliter oſtendetur, quò propius fuerit circulus mundi centro, eun<lb/>dem magis diſtare. </s>

<s id="id.2.1.19.3.1.5.0">atq; ita vt prius demonſtrabitur pondus in cir<lb/>cumferentia TAF centro R inniti, in circumferentia verò TG <lb/>à linea detineri; atq; in puncto T grauius eſſe. </s>

<s id="id.2.1.20.1.1.1.0"><margin.target id="note35"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 11 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<margin.target id="note35"/>

<s id="id.2.1.20.1.1.2.0"><margin.target id="note36"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 18 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<emph type="italics"/>Ex<emph.end type="italics"/> 11 <emph type="italics"/>Tertii.<emph.end type="italics"/>

<s id="id.2.1.20.1.1.3.0"><margin.target id="note37"></margin.target><emph type="italics"/>Cor.<emph.end type="italics"/> 8 <emph type="italics"/>&longs;exti<emph.end type="italics"/></s>

</s>

<s id="id.2.1.20.1.1.4.0"><margin.target id="note38"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 8 <emph type="italics"/>quinti<emph.end type="italics"/></s>

<s id="id.2.1.20.1.1.5.0"><margin.target id="note39"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 10 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

<margin.target id="note36"/>

<s id="id.2.1.20.1.1.6.0"><margin.target id="note40"></margin.target>7 <emph type="italics"/>Sexti.<emph.end type="italics"/></s>

<emph type="italics"/>Ex<emph.end type="italics"/> 18 <emph type="italics"/>Tertii.<emph.end type="italics"/>

<s id="id.2.1.20.1.1.7.0"><margin.target id="note41"></margin.target>26 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

</s>

<margin.target id="note37"/>

<emph type="italics"/>Cor.<emph.end type="italics"/> 8 <emph type="italics"/>ſexti<emph.end type="italics"/>

</s>

<margin.target id="note38"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 8 <emph type="italics"/>quinti<emph.end type="italics"/>

</s>

<margin.target id="note39"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 10 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<margin.target id="note40"/>7 <emph type="italics"/>Sexti.<emph.end type="italics"/>

</s>

<margin.target id="note41"/>26 <emph type="italics"/>Tertii.<emph.end type="italics"/>

</s>

<s id="id.2.1.21.1.2.1.0">Si autem punctum G eſſet <lb/>in centro mundi; tunc quò <lb/>pondus propius fuerit ipſi G, <lb/>grauius erit: & vbicunq; po<lb/>natur pondus præterquàm in <lb/>ipſo G, ſemper centro C inni<lb/>tetur, vt in K. </s>

<s id="id.2.1.21.1.2.1.0">Si autem punctum G e&longs;&longs;et <lb/>in centro mundi; tunc quò <lb/>pondus propius fuerit ip&longs;i G, <lb/>grauius erit: & vbicunq; po<lb/>natur pondus præterquàm in <lb/>ip&longs;o G, &longs;emper centro C inni<lb/>tetur, vt in K. </s>

<s id="N11058">nam ducta <lb/>G k, efficiet hæc (ſecun<lb/>dùm quam fit ponderis natu<lb/>ralis motus) vná cum libræ <lb/>brachio k C angulum acu<lb/>tum. </s>

<s>nam ducta <lb/>G k, efficiet hæc (&longs;ecun<lb/>dùm quam fit ponderis natu<lb/>ralis motus) vná cum libræ <lb/>brachio k C angulum acu<lb/>tum. </s>

<s id="id.2.1.21.1.2.2.0">æquicruris enim trian<lb/>guli CkG ad baſim anguli <lb/>ad k, & G ſunt ſemper acuti. </s>

<s id="id.2.1.21.1.2.2.0">æquicruris enim trian<lb/>guli CkG ad ba&longs;im anguli <lb/>ad k, & G &longs;unt &longs;emper acuti. </s>

<s id="id.2.1.21.1.2.3.0"><lb/><figure id="id.036.01.039.1.jpg" xlink:href="036/01/039/1.jpg"></figure><lb/>Conferantur autem inuicem hæc duo, pondus videlicet in k, & <lb/>pondus in D: erit pondus in k grauius, quàm in D. </s>

<lb/>

<s>nam iuncta <lb/>DG, cùm tres anguli cuiu&longs;cunque trianguli duobus &longs;int rectis <lb/>æquales, & trianguli CDG æquicruris angulus DCG maior &longs;it <lb/>angulo kCG æquicruris trianguli CkG: erunt reliqui ad ba&longs;im an<lb/>guli DGC GDC &longs;imul &longs;umpti reliquis KGCGkC &longs;imul &longs;umptis <lb/>minores. </s>

<s id="id.2.1.21.1.2.4.0">horumq; dimidii; angulus &longs;cilicet CDG angulo CKG <lb/>minor erit. </s>

<lb/>Conferantur autem inuicem hæc duo, pondus videlicet in k, & <lb/>pondus in D: erit pondus in k grauius, quàm in D. </s>

<s id="id.2.1.21.1.2.5.0">quare cùm pondus in k &longs;olutum naturaliter per <lb/>KG moueatur, pondusq; in D per DG, tanquam per &longs;patia, <lb/>quibus in centrum mundi feruntur; linea CD, hoc e&longs;t libræ <lb/>brachium magis adhærebit motui naturali ponderis in D pror<lb/>&longs;us &longs;oluti, lineæ &longs;cilicet DG; quàm Ck motui &longs;ecundùm kG <lb/>effecto. </s>

<s id="N11077">nam iuncta <lb/>DG, cùm tres anguli cuiuſcunque trianguli duobus ſint rectis <lb/>æquales, & trianguli CDG æquicruris angulus DCG maior ſit <lb/>angulo kCG æquicruris trianguli CkG: erunt reliqui ad baſim an<lb/>guli DGC GDC ſimul ſumpti reliquis KGCGkC ſimul ſumptis <lb/>minores. </s>

<s id="id.2.1.21.1.2.6.0">magis igitur &longs;u&longs;tinebit linea CD, quàm Ck. </s>

<s id="id.2.1.21.1.2.4.0">horumq; dimidii; angulus ſcilicet CDG angulo CKG <lb/>minor erit. </s>

<s id="id.2.1.21.1.2.7.0">ac pro<lb/>pterea pondus in k ex &longs;uperius dictis grauius erit, quàm in D. </s>

<s id="id.2.1.21.1.2.5.0">quare cùm pondus in k ſolutum naturaliter per <lb/>KG moueatur, pondusq; in D per DG, tanquam per ſpatia, <lb/>quibus in centrum mundi feruntur; linea CD, hoc eſt libræ <lb/>brachium magis adhærebit motui naturali ponderis in D pror<lb/>ſus ſoluti, lineæ ſcilicet DG; quàm Ck motui ſecundùm kG <lb/>effecto. </s>

<s id="id.2.1.21.1.2.7.0.a"><lb/>Præterea quoniam pondus in K &longs;i e&longs;&longs;et omnino liberum, pror&longs;u&longs;q; <lb/>&longs;olutum, deor&longs;um per k G moueretur; ni&longs;i à linea C k prohibere<lb/>tur, quæ pondus vltra lineam KG per circumferentiam KH mo<lb/>ueri cogit; linea C k pondus partim &longs;u&longs;tinebit, ip&longs;iq; renitetur; <lb/>cùm illud per circumferentiam k H moueri compellat. </s>

<s id="id.2.1.21.1.2.6.0">magis igitur ſuſtinebit linea CD, quàm Ck. </s>

<s id="id.2.1.21.1.2.8.0">& <lb/>quoniam angulus CDG minor e&longs;t angulo CkG, & angulus CDk <lb/>angulo CkH e&longs;t æqualis; erit reliquus GDk reliquo G k H maior. </s>

<s id="id.2.1.21.1.2.7.0">ac pro<lb/>pterea pondus in k ex ſuperius dictis grauius erit, quàm in D. </s>

<s id="id.2.1.21.1.2.9.0"><lb/>circumferentia igitur k H motui naturali ponderis in k &longs;oluti, li<pb xlink:href="036/01/040.jpg"/>neæ &longs;cilicet KG propior erit, <lb/>quàm circumferentia Dk li<lb/>neæ DG. </s>

<s>quare linea CD <lb/>ponderi in D magis renititur, <lb/>quàm linea C k ip&longs;i ponde<lb/>ri in K. </s>

<lb/>Præterea quoniam pondus in K ſi eſſet omnino liberum, prorſuſq; <lb/>ſolutum, deorſum per k G moueretur; niſi à linea C k prohibere<lb/>tur, quæ pondus vltra lineam KG per circumferentiam KH mo<lb/>ueri cogit; linea C k pondus partim ſuſtinebit, ipſiq; renitetur; <lb/>cùm illud per circumferentiam k H moueri compellat. </s>

<s id="id.2.1.21.1.2.9.0.a">ergo pondus in k <lb/>grauius erit, quàm in D. </s>

<s id="id.2.1.21.1.2.8.0">& <lb/>quoniam angulus CDG minor eſt angulo CkG, & angulus CDk <lb/>angulo CkH eſt æqualis; erit reliquus GDk reliquo G k H maior. </s>

<s id="id.2.1.21.1.2.9.0.b"><lb/>Similiter o&longs;tendetur pondus, <lb/>quò fuerit ip&longs;i F propius, vt <lb/>in L, minus grauitare: pro<lb/>pius verò ip&longs;i G, vt in H, <lb/>grauius e&longs;&longs;e. <figure id="id.036.01.040.1.jpg" xlink:href="036/01/040/1.jpg"></figure></s>

<lb/>circumferentia igitur k H motui naturali ponderis in k ſoluti, li<pb xlink:href="036/01/040.jpg" xlink:type="simple"/>neæ ſcilicet KG propior erit, <lb/>quàm circumferentia Dk li<lb/>neæ DG. </s>

<s id="N110BC">quare linea CD <lb/>ponderi in D magis renititur, <lb/>quàm linea C k ipſi ponde<lb/>ri in K. </s>

<s id="id.2.1.21.1.2.9.0.a">ergo pondus in k <lb/>grauius erit, quàm in D. </s>

<lb/>Similiter oſtendetur pondus, <lb/>quò fuerit ipſi F propius, vt <lb/>in L, minus grauitare: pro<lb/>pius verò ipſi G, vt in H, <lb/>grauius eſſe. <figure id="id.036.01.040.1.jpg" place="text" xlink:href="036/01/040/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.21.2.1.1.0">Si verò centrum mundi <lb/>S eſſet inter puncta CG; <lb/>primùm quidem ſimili<lb/>ter oſtendetur pondus vbi<lb/>cunq; poſitum centro C <lb/>initi, vt in H. </s>

<s id="id.2.1.21.2.1.1.0">Si verò centrum mundi <lb/>S e&longs;&longs;et inter puncta CG; <lb/>primùm quidem &longs;imili<lb/>ter o&longs;tendetur pondus vbi<lb/>cunq; po&longs;itum centro C <lb/>initi, vt in H. </s>

<s id="N110EA">ductis enim <lb/>HG HS, angulus ad <lb/>baſim GHC æquicruris tri<lb/>anguli CHG eſt ſemper <lb/>acutus: quare & SHC ip<lb/>ſo minor erit quoq; ſem<lb/>per acutus. </s>

<s>ductis enim <lb/>HG HS, angulus ad <lb/>ba&longs;im GHC æquicruris tri<lb/>anguli CHG e&longs;t &longs;emper <lb/>acutus: quare & SHC ip<lb/>&longs;o minor erit quoq; &longs;em<lb/>per acutus. </s>

<s id="id.2.1.21.2.1.2.0">ducatur au<lb/>tem à puncto S ipſi CS <lb/>perpendicularis Sk. </s>

<s id="id.2.1.21.2.1.2.0">ducatur au<lb/>tem à puncto S ip&longs;i CS <lb/>perpendicularis Sk. </s>

<s id="id.2.1.21.2.1.3.0">di<lb/><figure id="id.036.01.040.2.jpg" xlink:href="036/01/040/2.jpg"></figure><lb/>co pondus grauius e&longs;&longs;e in k, quàm in alio &longs;itu circumferentiæ FKG. <lb/>& quò propius fuerit ip&longs;i F, vel G, minus grauitare. </s>

<s id="id.2.1.21.2.1.4.0">Accipiantur <lb/>ver&longs;us F puncta DL, connectanturq; LC LS DC DS, produ<lb/>canturq; LS DS k SHS v&longs;q; ad circuli circumferentiam in EM <lb/>NO; connectanturq; CE, CM, CN, CO. </s>

<lb/>co pondus grauius eſſe in k, quàm in alio ſitu circumferentiæ FKG. <lb/>& quò propius fuerit ipſi F, vel G, minus grauitare. </s>

<s id="id.2.1.21.2.1.4.0.a">Quoniam enim <lb/><arrow.to.target n="note42"></arrow.to.target>LE DM &longs;e inuicem &longs;ecant in S; erit rectangulum LSE rectan<lb/><arrow.to.target n="note43"></arrow.to.target>gulo DSM æquale. </s>

<s id="id.2.1.21.2.1.4.0">Accipiantur <lb/>verſus F puncta DL, connectanturq; LC LS DC DS, produ<lb/>canturq; LS DS k SHS vſq; ad circuli circumferentiam in EM <lb/>NO; connectanturq; CE, CM, CN, CO. </s>

<s id="id.2.1.21.2.1.5.0">quare vt LS ad DS ita erit SM <lb/><arrow.to.target n="note44"></arrow.to.target>ad SE. </s>

<s id="id.2.1.21.2.1.4.0.a">Quoniam enim <lb/>

<s id="id.2.1.21.2.1.5.0.a">maior autem e&longs;t LS, quàm DS; & SM ip&longs;a SE. </s>

<arrow.to.target n="note42" xlink:type="simple"/>LE DM ſe inuicem ſecant in S; erit rectangulum LSE rectan<lb/>

<s id="id.2.1.21.2.1.5.0.b"><pb n="14" xlink:href="036/01/041.jpg"/>ergo LS SE &longs;imul &longs;umptæ ip&longs;is DS SM maiores erunt. </s>

<arrow.to.target n="note43" xlink:type="simple"/>gulo DSM æquale. </s>

<s id="id.2.1.21.2.1.6.0">eademq; <arrow.to.target n="note45"></arrow.to.target><lb/>ratione kN minorem e&longs;&longs;e DM o&longs;tendetur. </s>

<s id="id.2.1.21.2.1.5.0">quare vt LS ad DS ita erit SM <lb/>

<s id="id.2.1.21.2.1.7.0">rur&longs;us quoniam re<lb/>ctangulum OSH æquale e&longs;t rectangulo kSN; ob eandem cau&longs;am <lb/>HO maior erit kN. </s>

<arrow.to.target n="note44" xlink:type="simple"/>ad SE. </s>

<s>eodemq; pror&longs;us modo kN omnibus a<lb/>liis per punctum S tran&longs;euntibus minorem e&longs;&longs;e demon&longs;trabitur. </s>

<s id="id.2.1.21.2.1.5.0.a">maior autem eſt LS, quàm DS; & SM ipſa SE. </s>

<s id="id.2.1.21.2.1.8.0"><lb/>& quoniam æquicrurium triangulorum CLE DCM latera LC <lb/>CE lateribus DC CM &longs;unt æqualia; ba&longs;is verò LE maior e&longs;t <lb/>DM: erit angulus LCE angulo DCM maior. </s>

<s id="id.2.1.21.2.1.9.0">quare ad ba&longs;im <arrow.to.target n="note46"></arrow.to.target><lb/>anguli C<emph type="italics"/>L<emph.end type="italics"/>E CEL &longs;imul &longs;umpti angulis CDM CMD mi<lb/>nores erunt. </s>

<pb n="14" xlink:href="036/01/041.jpg" xlink:type="simple"/>ergo LS SE ſimul ſumptæ ipſis DS SM maiores erunt. </s>

<s id="id.2.1.21.2.1.10.0">& horum dimidii, angulus &longs;cilicet CLS angulo CDS <lb/>minor erit. </s>

<s id="id.2.1.21.2.1.6.0">eademq; <arrow.to.target n="note45" xlink:type="simple"/>

<s id="id.2.1.21.2.1.11.0">ergo pondus in <emph type="italics"/>L<emph.end type="italics"/> magis &longs;upra lineam LC, quàm <lb/>in D &longs;upra DC grauitabit. </s>

<lb/>ratione kN minorem eſſe DM oſtendetur. </s>

<s id="id.2.1.21.2.1.11.0.a">magisqué centro innitetur in L, quàm <lb/>in D. </s>

<s id="id.2.1.21.2.1.7.0">rurſus quoniam re<lb/>ctangulum OSH æquale eſt rectangulo kSN; ob eandem cauſam <lb/>HO maior erit kN. </s>

<s id="id.2.1.21.2.1.11.0.b">&longs;imiliter o&longs;tendetur in D magis <expan abbr="c&etilde;tro">centro</expan> C inniti, quàm in k. </s>

<s id="N11143">eodemq; prorſus modo kN omnibus a<lb/>liis per punctum S tranſeuntibus minorem eſſe demonſtrabitur. </s>

<s id="id.2.1.21.2.1.12.0">ergo <lb/><expan abbr="ponds">pondus</expan> in k grauius erit, quàm in D; & in D, quàm in L. </s>

<s>eademq; pror<lb/>&longs;us ratione quoniam kN minor e&longs;t HO, erit angulus CKS an<lb/>gulo CHS maior. </s>

<lb/>& quoniam æquicrurium triangulorum CLE DCM latera LC <lb/>CE lateribus DC CM ſunt æqualia; baſis verò LE maior eſt <lb/>DM: erit angulus LCE angulo DCM maior. </s>

<s id="id.2.1.21.2.1.13.0">quare pondus in H magis centro C innite<lb/>tur, quàm in k. </s>

<s id="id.2.1.21.2.1.9.0">quare ad baſim <arrow.to.target n="note46" xlink:type="simple"/>

<s id="id.2.1.21.2.1.14.0">& hoc modo o&longs;tendetur, vbicunq; in circum<lb/>ferentia FDG fuerit pondus, minus in K centro C inniti, quàm <lb/>in alio &longs;itu: & quò propius fuerit ip&longs;i F, vel G, magis inniti. </s>

<lb/>anguli C<emph type="italics"/>L<emph.end type="italics"/>E CEL ſimul ſumpti angulis CDM CMD mi<lb/>nores erunt. </s>

<s id="id.2.1.21.2.1.15.0">dein<lb/>de quoniam angulus CkS maior e&longs;t CDS, & CDk æqualis <lb/>e&longs;t CkH: erit reliquus SkH reliquo SDk minor. </s>

<s id="id.2.1.21.2.1.10.0">& horum dimidii, angulus ſcilicet CLS angulo CDS <lb/>minor erit. </s>

<s id="id.2.1.21.2.1.16.0">quare cir<lb/>cumferentia k H propior erit motui naturali recto ponderis in K <lb/>&longs;oluti, lineæ &longs;cilicet k S, quàm circumferentia D k motui DS. </s>

<s id="id.2.1.21.2.1.11.0">ergo pondus in <emph type="italics"/>L<emph.end type="italics"/> magis ſupra lineam LC, quàm <lb/>in D ſupra DC grauitabit. </s>

<s id="id.2.1.21.2.1.16.0.a">& <lb/>ideo linea CD magis ip&longs;i ponderi in D renititur, quàm CK <lb/>ponderi in k con&longs;tituto. </s>

<s id="id.2.1.21.2.1.11.0.a">magisqué centro innitetur in L, quàm <lb/>in D. </s>

<s id="id.2.1.21.2.1.17.0">hacq; ratione o&longs;tendetur angulum <lb/>SHG maiorem e&longs;&longs;e SkH: & per con&longs;equens lineam CH magis <lb/>ponderi in H reniti, quàm CK ponderi in K. </s>

<s id="id.2.1.21.2.1.11.0.b">ſimiliter oſtendetur in D magis <expan abbr="cẽtro">centro</expan> C inniti, quàm in k. </s>

<s>&longs;imiliter demon<lb/>&longs;trabitur lineam C<emph type="italics"/>L<emph.end type="italics"/> magis pondus &longs;u&longs;tinere, quàm CD: ob <lb/>ea&longs;demq; cau&longs;as o&longs;tendetur pondus in K minus &longs;upra lineam Ck <lb/>grauitare, quàm in quouis alio &longs;itu fuerit circumferentiæ FDG. <lb/></s>

<s>& quò propius fuerit ip&longs;i F, vel G, minus grauitare. </s>

<expan abbr="ponds">pondus</expan> in k grauius erit, quàm in D; & in D, quàm in L. </s>

<s id="id.2.1.21.2.1.18.0">grauius ergo <lb/>erit in k, quàm in alio &longs;itu: minu&longs;q; graue erit, quò propius fue<lb/>rit ip&longs;i F, vel G. <pb xlink:href="036/01/042.jpg"/></s>

<s id="N11183">eademq; pror<lb/>ſus ratione quoniam kN minor eſt HO, erit angulus CKS an<lb/>gulo CHS maior. </s>

<s id="id.2.1.21.2.1.13.0">quare pondus in H magis centro C innite<lb/>tur, quàm in k. </s>

<s id="id.2.1.21.2.1.14.0">& hoc modo oſtendetur, vbicunq; in circum<lb/>ferentia FDG fuerit pondus, minus in K centro C inniti, quàm <lb/>in alio ſitu: & quò propius fuerit ipſi F, vel G, magis inniti. </s>

<s id="id.2.1.21.2.1.15.0">dein<lb/>de quoniam angulus CkS maior eſt CDS, & CDk æqualis <lb/>eſt CkH: erit reliquus SkH reliquo SDk minor. </s>

<s id="id.2.1.21.2.1.16.0">quare cir<lb/>cumferentia k H propior erit motui naturali recto ponderis in K <lb/>ſoluti, lineæ ſcilicet k S, quàm circumferentia D k motui DS. </s>

<s id="id.2.1.21.2.1.16.0.a">& <lb/>ideo linea CD magis ipſi ponderi in D renititur, quàm CK <lb/>ponderi in k conſtituto. </s>

<s id="id.2.1.21.2.1.17.0">hacq; ratione oſtendetur angulum <lb/>SHG maiorem eſſe SkH: & per conſequens lineam CH magis <lb/>ponderi in H reniti, quàm CK ponderi in K. </s>

<s id="N111B1">ſimiliter demon<lb/>ſtrabitur lineam C<emph type="italics"/>L<emph.end type="italics"/> magis pondus ſuſtinere, quàm CD: ob <lb/>eaſdemq; cauſas oſtendetur pondus in K minus ſupra lineam Ck <lb/>grauitare, quàm in quouis alio ſitu fuerit circumferentiæ FDG. <lb/>

</s>

<s id="N111C0">& quò propius fuerit ipſi F, vel G, minus grauitare. </s>

<s id="id.2.1.21.2.1.18.0">grauius ergo <lb/>erit in k, quàm in alio ſitu: minuſq; graue erit, quò propius fue<lb/>rit ipſi F, vel G. <pb xlink:href="036/01/042.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.22.1.1.1.0"><margin.target id="note42"></margin.target>35 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<margin.target id="note42"/>35 <emph type="italics"/>Tertii.<emph.end type="italics"/>

<s id="id.2.1.22.1.1.2.0"><margin.target id="note43"></margin.target>16 <emph type="italics"/>Sexti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.22.1.1.3.0"><margin.target id="note44"></margin.target>7 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<s id="id.2.1.22.1.1.4.0"><margin.target id="note45"></margin.target>25 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note43"/>16 <emph type="italics"/>Sexti.<emph.end type="italics"/>

<s id="id.2.1.22.1.1.5.0"><margin.target id="note46"></margin.target>25 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

</s>

<margin.target id="note44"/>7 <emph type="italics"/>Tertii.<emph.end type="italics"/>

</s>

<margin.target id="note45"/>25 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note46"/>25 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.23.1.1.1.0">Si deniq; centrum C <lb/>eſſet in centro mundi, <lb/>pondus vbicunque con<lb/>ſtitutum manere mani<lb/>feſtum eſt. </s>

<s id="id.2.1.23.1.1.1.0">Si deniq; centrum C <lb/>e&longs;&longs;et in centro mundi, <lb/>pondus vbicunque con<lb/>&longs;titutum manere mani<lb/>fe&longs;tum e&longs;t. </s>

<s id="id.2.1.23.1.1.2.0">vt poſito pon<lb/>dere in D, linea CD to<lb/>tum ſuſtinebit pondus; <lb/>cùm ipſius ponderis in D <lb/>horizonti ſit perpendicu<lb/>

<s id="id.2.1.23.1.1.2.0">vt po&longs;ito pon<lb/>dere in D, linea CD to<lb/>tum &longs;u&longs;tinebit pondus; <lb/>cùm ip&longs;ius ponderis in D <lb/>horizonti &longs;it perpendicu<lb/><arrow.to.target n="note47"></arrow.to.target>laris. </s>

<arrow.to.target n="note47" xlink:type="simple"/>laris. </s>

<s id="id.2.1.23.1.1.3.0">pondus ergo ma <lb/>nebit. <figure id="id.036.01.042.1.jpg" xlink:href="036/01/042/1.jpg"></figure></s>

<s id="id.2.1.23.1.1.3.0">pondus ergo ma <lb/>nebit. <figure id="id.036.01.042.1.jpg" place="text" xlink:href="036/01/042/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.23.2.1.1.0">Quoniam autem in his hactenus demonſtratis, nullam de gra<lb/>uitate brachii libræ mentionem fecimus, idcirco ſi brachii quoq; <lb/>grauitatem conſiderare voluerimus, centrum grauitatis magnitu<lb/>dinis ex pondere, brachioq; compoſitæ inueniri poterit, circulo<lb/>rumq; circumferentiæ ſecundum diſtantiam à centro libræ ad <lb/>hoc ipſum grauitatis centrum deſcribentur, ac ſi in ipſo (vt re ue<lb/>ra eſt) pondus conſtitutum fuerit; omnia, ſicuti abſq; libræ bra<lb/>chii grauitate conſiderata inuenimus; hoc quoq; modo eius conſi<lb/>derata grauitate reperiemus. </s>

<s id="id.2.1.23.2.1.1.0">Quoniam autem in his hactenus demon&longs;tratis, nullam de gra<lb/>uitate brachii libræ mentionem fecimus, idcirco &longs;i brachii quoq; <lb/>grauitatem con&longs;iderare voluerimus, centrum grauitatis magnitu<lb/>dinis ex pondere, brachioq; compo&longs;itæ inueniri poterit, circulo<lb/>rumq; circumferentiæ &longs;ecundum di&longs;tantiam à centro libræ ad <lb/>hoc ip&longs;um grauitatis centrum de&longs;cribentur, ac &longs;i in ip&longs;o (vt re ue<lb/>ra e&longs;t) pondus con&longs;titutum fuerit; omnia, &longs;icuti ab&longs;q; libræ bra<lb/>chii grauitate con&longs;iderata inuenimus; hoc quoq; modo eius con&longs;i<lb/>derata grauitate reperiemus. </s>

<s id="id.2.1.24.1.1.1.0"><margin.target id="note47"></margin.target>1 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

<margin.target id="note47"/>1 <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.25.1.2.1.0">Ex dictis igitur, conſiderando li<lb/>bram, vt longè à mundi centro a<lb/>beſt, quemadmodum ipſi fecere, ſi<lb/>cuti etiam actu eſt, apparet falſitas <lb/>dicentium pondus in A grauius eſſe, <lb/>quàm in alio ſitu. </s>

<s id="id.2.1.25.1.2.1.0">Ex dictis igitur, con&longs;iderando li<lb/>bram, vt longè à mundi centro a<lb/>be&longs;t, quemadmodum ip&longs;i fecere, &longs;i<lb/>cuti etiam actu e&longs;t, apparet fal&longs;itas <lb/>dicentium pondus in A grauius e&longs;&longs;e, <lb/>quàm in alio &longs;itu. </s>

<s id="id.2.1.25.1.2.2.0">ſimulq; falſum eſſe, <lb/>quò pondus à linea FG magis diſtat <lb/>

<s id="id.2.1.25.1.2.2.0">&longs;imulq; fal&longs;um e&longs;&longs;e, <lb/>quò pondus à linea FG magis di&longs;tat <lb/><expan abbr="grauiuis">grauius</expan> e&longs;&longs;e. </s>

<expan abbr="grauiuis">grauius</expan> eſſe. </s>

<s id="id.2.1.25.1.2.3.0">nam punctum O pro<lb/>pius e&longs;t ip&longs;i FG, quàm punctum A. <lb/></s>

<s id="id.2.1.25.1.2.3.0">nam punctum O pro<lb/>pius eſt ipſi FG, quàm punctum A. <lb/>

<s>e&longs;t enim linea à puncto O ip&longs;i FG <arrow.to.target n="note48"></arrow.to.target><lb/>perpendicularis ip&longs;a CA minor. </s>

</s>

<s id="id.2.1.25.1.2.4.0">de<lb/>inde ex puncto A pondus velocius mo<lb/>ueri, quàm ab alio &longs;itu, e&longs;t quoque <lb/>fal&longs;um. </s>

<s id="N11270">eſt enim linea à puncto O ipſi FG <arrow.to.target n="note48" xlink:type="simple"/>

<s id="id.2.1.25.1.2.5.0">ex puncto enim O pondus ve<lb/>locius mouebitur, quàm ex puncto <lb/>A; cùm in O &longs;it magis liberum, atq; <lb/>&longs;olutum, quàm in alio &longs;itu: de&longs;cen&longs;us <lb/>qué ex puncto O propior &longs;it motui na<lb/>turali recto, quàm quilibet alius de<lb/>&longs;cen&longs;us. <figure id="id.036.01.043.1.jpg" xlink:href="036/01/043/1.jpg"></figure></s>

<lb/>perpendicularis ipſa CA minor. </s>

<s id="id.2.1.25.1.2.4.0">de<lb/>inde ex puncto A pondus velocius mo<lb/>ueri, quàm ab alio ſitu, eſt quoque <lb/>falſum. </s>

<s id="id.2.1.25.1.2.5.0">ex puncto enim O pondus ve<lb/>locius mouebitur, quàm ex puncto <lb/>A; cùm in O ſit magis liberum, atq; <lb/>ſolutum, quàm in alio ſitu: deſcenſus <lb/>qué ex puncto O propior ſit motui na<lb/>turali recto, quàm quilibet alius de<lb/>ſcenſus. <figure id="id.036.01.043.1.jpg" place="text" xlink:href="036/01/043/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.25.2.1.1.0">Præterea cùm ex re<lb/>ctiori, & obliquiori <expan abbr="deſcẽſu">deſcen<lb/>ſu</expan> oſtendunt, pondus in <lb/>A <expan abbr="grauiur">grauior</expan> eſſe, quàm in <lb/>D; & in D, quàm in <lb/>L; primùm quidem fal<lb/>ſum exiſtimant, ſi pon<lb/>dus aliquod collocatum <lb/>fuerit in quocunq; ſitu <lb/>circunferentiæ, vt in D, <lb/>rectum eius deſcenſum <lb/>per rectam lineam DR <lb/>ipſi FG parallelam, tam <lb/>quàm ſecundùm mo<figure id="id.036.01.043.2.jpg" place="text" xlink:href="036/01/043/2.jpg" xlink:type="simple"/>

<s id="id.2.1.25.2.1.1.0">Præterea cùm ex re<lb/>ctiori, & obliquiori <expan abbr="de&longs;c&etilde;&longs;u">de&longs;cen<lb/>&longs;u</expan> o&longs;tendunt, pondus in <lb/>A <expan abbr="grauiur">grauior</expan> e&longs;&longs;e, quàm in <lb/>D; & in D, quàm in <lb/>L; primùm quidem fal<lb/>&longs;um exi&longs;timant, &longs;i pon<lb/>dus aliquod collocatum <lb/>fuerit in quocunq; &longs;itu <lb/>circunferentiæ, vt in D, <lb/>rectum eius de&longs;cen&longs;um <lb/>per rectam lineam DR <lb/>ip&longs;i FG parallelam, tam <lb/>quàm &longs;ecundùm mo<figure id="id.036.01.043.2.jpg" xlink:href="036/01/043/2.jpg"></figure><pb xlink:href="036/01/044.jpg"/>tum naturalem fieri de<lb/>bere; &longs;icuti prius dictum <lb/>e&longs;t. </s>

<pb xlink:href="036/01/044.jpg" xlink:type="simple"/>tum naturalem fieri de<lb/>bere; ſicuti prius dictum <lb/>eſt. </s>

<s id="id.2.1.25.2.1.2.0">In quocunq; enim <lb/>&longs;itu pondus aliquod con<lb/>&longs;tituatur, &longs;i naturalem <lb/>eius ad propium locum <lb/>motionem &longs;pectemus, <lb/>cùm rectá ad eum &longs;ua<lb/>ptè natura moueatur, &longs;up<lb/>po&longs;ita totius vniuer&longs;i figu<lb/>ra, eiu&longs;modi erit; vt <lb/>&longs;emper <expan abbr="&longs;pati&utilde;">&longs;patium</expan>, per quod <lb/>naturaliter mouetur, ra<lb/>tionem habere videatur <lb/><figure id="id.036.01.044.1.jpg" xlink:href="036/01/044/1.jpg"></figure><lb/>lineæ à circumferentia ad centrum productæ. </s>

<s id="id.2.1.25.2.1.2.0">In quocunq; enim <lb/>ſitu pondus aliquod con<lb/>ſtituatur, ſi naturalem <lb/>eius ad propium locum <lb/>motionem ſpectemus, <lb/>cùm rectá ad eum ſua<lb/>ptè natura moueatur, ſup<lb/>poſita totius vniuerſi figu<lb/>ra, eiuſmodi erit; vt <lb/>ſemper <expan abbr="ſpatiũ">ſpatium</expan>, per quod <lb/>naturaliter mouetur, ra<lb/>tionem habere videatur <lb/>

<s id="id.2.1.25.2.1.3.0">non igitur natura<lb/>les de&longs;cen&longs;us recti cuiuslibet &longs;oluti ponderis per lineas fieri po&longs;<lb/>&longs;unt inter &longs;e &longs;e parallelas; cùm omnes in centrum mundi conue<lb/>niant. </s>

<s id="id.2.1.25.2.1.4.0">&longs;upponunt deinde ponderis ex D in A per rectam lineam <lb/>ver&longs;us centrum mundi motum eiu&longs;dem e&longs;&longs;e quantitatis, ac &longs;i fui&longs;<lb/>&longs;et ex O in C: ita vt punctum A æqualiter à centro mundi &longs;it <lb/>di&longs;tans, vt C. </s>

<lb/>lineæ à circumferentia ad centrum productæ. </s>

<s>quod e&longs;t etiam fal&longs;um; nam punctum A magis <lb/>à centro mundi di&longs;tat, quàm C: maior enim e&longs;t linea à cen<lb/><arrow.to.target n="note49"></arrow.to.target>tro mundi v&longs;q; ad A, quàm à centro mundi v&longs;q; ad C: cùm li<lb/>nea à centro mundi v&longs;q; ad A rectum &longs;ubtendat angulum à li<lb/>neis AC, & à puncto C ad centrum mundi contentum. </s>

<s id="id.2.1.25.2.1.3.0">non igitur natura<lb/>les deſcenſus recti cuiuslibet ſoluti ponderis per lineas fieri poſ<lb/>ſunt inter ſe ſe parallelas; cùm omnes in centrum mundi conue<lb/>niant. </s>

<s id="id.2.1.25.2.1.5.0">ex qui<lb/>bus non &longs;olum &longs;uppo&longs;itio illa, qua libram DE in AB redire demon<lb/>&longs;trant, verùm etiam omnes ferè ip&longs;orum demon&longs;trationes ruunt. </s>

<s id="id.2.1.25.2.1.4.0">ſupponunt deinde ponderis ex D in A per rectam lineam <lb/>verſus centrum mundi motum eiuſdem eſſe quantitatis, ac ſi fuiſ<lb/>ſet ex O in C: ita vt punctum A æqualiter à centro mundi ſit <lb/>diſtans, vt C. </s>

<s id="id.2.1.25.2.1.6.0"><lb/>ni&longs;i forta&longs;&longs;e dixerint, hæc omnia propter maximam à centro mun<lb/>di v&longs;q; ad nos di&longs;tantiam adeo in&longs;en&longs;ibilia e&longs;&longs;e, vt propter in&longs;en<lb/>&longs;ibilitatem tanquam vera &longs;upponi po&longs;sint: cùm omnes <expan abbr="quid&etilde;">quidem</expan> alii, qui <lb/>hæc tractauerunt, tanquam nota &longs;uppo&longs;uerint. </s>

<s id="N11300">quod eſt etiam falſum; nam punctum A magis <lb/>à centro mundi diſtat, quàm C: maior enim eſt linea à cen<lb/>

<s id="id.2.1.25.2.1.7.0">præ&longs;ertim quia <lb/>&longs;en&longs;ibilitas illa non efficit, quin de&longs;cen&longs;us ponderis ex L in D <lb/>(vt eorum verbis vtar) minus capiat de directo, quàm de&longs;cen<lb/>&longs;us DA. </s>

<arrow.to.target n="note49" xlink:type="simple"/>tro mundi vſq; ad A, quàm à centro mundi vſq; ad C: cùm li<lb/>nea à centro mundi vſq; ad A rectum ſubtendat angulum à li<lb/>neis AC, & à puncto C ad centrum mundi contentum. </s>

<s>&longs;imiliter arcus DA magis de directo capiet, quàm cir<lb/>cumferentia EV. </s>

<s id="id.2.1.25.2.1.5.0">ex qui<lb/>bus non ſolum ſuppoſitio illa, qua libram DE in AB redire demon<lb/>ſtrant, verùm etiam omnes ferè ipſorum demonſtrationes ruunt. </s>

<s>quocirca vera erit &longs;uppo&longs;itio; aliæq; demon<lb/>&longs;trationes in &longs;uo robore permanebunt. </s>

<s id="id.2.1.25.2.1.8.0">Concedamus etiam pon<pb n="16" xlink:href="036/01/045.jpg"/>dus in A grauius e&longs;&longs;e, quàm in alio &longs;itu; rectumq; ponderis de<lb/>&longs;cen&longs;um per rectam lineam ip&longs;i FG parallelam fieri debere; & <lb/>quælibet puncta in lineis horizonti æquidi&longs;tantibus accepta æ<lb/>qualiter à centro mundi di&longs;tare: non tamen propterea &longs;equetur, <lb/>veram e&longs;&longs;e demon&longs;trationem, qua inferunt pondus in A grauius <lb/>e&longs;&longs;e, quàm in alio &longs;itu, vt in L. </s>

<lb/>niſi fortaſſe dixerint, hæc omnia propter maximam à centro mun<lb/>di vſq; ad nos diſtantiam adeo inſenſibilia eſſe, vt propter inſen<lb/>ſibilitatem tanquam vera ſupponi poſsint: cùm omnes <expan abbr="quidẽ">quidem</expan> alii, qui <lb/>hæc tractauerunt, tanquam nota ſuppoſuerint. </s>

<s>&longs;i enim verum e&longs;&longs;et, quò pon<lb/>dus hoc modo rectius de&longs;cendit, ibi grauius e&longs;&longs;e; &longs;equeretur etiam, <lb/>quò idem pondus in æqualibus arcubus æqualiter rectè de&longs;cende<lb/>ret, vt in ii&longs;dem locis æqualem haberet grauitatem, quod fal<lb/>&longs;um e&longs;&longs;e ita demon&longs;tratur. </s>

<s id="id.2.1.25.2.1.7.0">præſertim quia <lb/>ſenſibilitas illa non efficit, quin deſcenſus ponderis ex L in D <lb/>(vt eorum verbis vtar) minus capiat de directo, quàm deſcen<lb/>ſus DA. </s>

<s id="N1132B">ſimiliter arcus DA magis de directo capiet, quàm cir<lb/>cumferentia EV. </s>

<s id="N1132F">quocirca vera erit ſuppoſitio; aliæq; demon<lb/>ſtrationes in ſuo robore permanebunt. </s>

<s id="id.2.1.25.2.1.8.0">Concedamus etiam pon<pb n="16" xlink:href="036/01/045.jpg" xlink:type="simple"/>dus in A grauius eſſe, quàm in alio ſitu; rectumq; ponderis de<lb/>ſcenſum per rectam lineam ipſi FG parallelam fieri debere; & <lb/>quælibet puncta in lineis horizonti æquidiſtantibus accepta æ<lb/>qualiter à centro mundi diſtare: non tamen propterea ſequetur, <lb/>veram eſſe demonſtrationem, qua inferunt pondus in A grauius <lb/>eſſe, quàm in alio ſitu, vt in L. </s>

<s id="N11345">ſi enim verum eſſet, quò pon<lb/>dus hoc modo rectius deſcendit, ibi grauius eſſe; ſequeretur etiam, <lb/>quò idem pondus in æqualibus arcubus æqualiter rectè deſcende<lb/>ret, vt in iiſdem locis æqualem haberet grauitatem, quod fal<lb/>ſum eſſe ita demonſtratur. </s>

<s id="id.2.1.26.1.1.1.0"><margin.target id="note48"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 15 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<margin.target id="note48"/>

<s id="id.2.1.26.1.1.2.0"><margin.target id="note49"></margin.target>18 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<emph type="italics"/>Ex<emph.end type="italics"/> 15 <emph type="italics"/>Tertii.<emph.end type="italics"/>

</s>

<margin.target id="note49"/>18 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.27.1.1.1.0">Sint circumferentiæ AL AM inter ſe ſe æquales; & conne<lb/>ctatur LM, quæ AB ſecet in X: erit LM ipſi FG æquidiſtans, <lb/>ipſiq; AB perpendicularis. </s>

<s id="id.2.1.27.1.1.1.0">Sint circumferentiæ AL AM inter &longs;e &longs;e æquales; & conne<lb/>ctatur LM, quæ AB &longs;ecet in X: erit LM ip&longs;i FG æquidi&longs;tans, <lb/>ip&longs;iq; AB perpendicularis. </s>

<s id="id.2.1.27.1.1.2.0">& XM ipſi XL æqualis erit. </s>

<s id="id.2.1.27.1.1.2.0">& XM ip&longs;i XL æqualis erit. </s>

<s id="id.2.1.27.1.1.3.0">&longs;i igi<arrow.to.target n="note50"></arrow.to.target><lb/>tur pondus ex L moueatur in A per circumferentiam LA, rectus <lb/>eius motus erit &longs;ecundùm lineam LX. </s>

<lb/>tur pondus ex L moueatur in A per circumferentiam LA, rectus <lb/>eius motus erit ſecundùm lineam LX. </s>

<s id="id.2.1.27.1.1.3.0.a">&longs;i verò moueatur ex A <lb/>in M per circumferentiam AM, &longs;ecundùm rectam eius motus <lb/>erit XM. </s>

<s id="id.2.1.27.1.1.3.0.a">ſi verò moueatur ex A <lb/>in M per circumferentiam AM, ſecundùm rectam eius motus <lb/>erit XM. </s>

<s id="id.2.1.27.1.1.3.0.b">quare de&longs;cen&longs;us ex L in A æqualis erit de&longs;cen&longs;ui ex A <lb/>in M; tum ob circumferentias æquales, tum propter rectas li<lb/>neas ip&longs;i AB perpendiculares æquales. </s>

<s id="id.2.1.27.1.1.3.0.b">quare deſcenſus ex L in A æqualis erit deſcenſui ex A <lb/>in M; tum ob circumferentias æquales, tum propter rectas li<lb/>neas ipſi AB perpendiculares æquales. </s>

<s id="id.2.1.27.1.1.4.0">ergo idem pondus in L <lb/>æquè graue erit, vt in A, quod e&longs;t fal&longs;um. </s>

<s id="id.2.1.27.1.1.4.0">ergo idem pondus in L <lb/>æquè graue erit, vt in A, quod eſt falſum. </s>

<s id="id.2.1.27.1.1.5.0">cum longé grauius &longs;it <lb/>in A, quàm in L. </s>

<s id="id.2.1.27.1.1.5.0">cum longé grauius ſit <lb/>in A, quàm in L. </s>

<s id="id.2.1.28.1.1.1.0"><margin.target id="note50"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 3 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<margin.target id="note50"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 3 <emph type="italics"/>Tertii.<emph.end type="italics"/>

</s>

<s id="id.2.1.29.1.1.1.0">Quamuis autem AMLA æqualiter ſecundùm ipſos de directo <lb/>capiant; dicent fortaſſe, quia tamen principium deſcenſus ex L <lb/>ſcilicet LD minus de directo capit, quàm principium deſcenſus <lb/>ex A, ſcilicet AN; pondus in A grauius erit, quàm in L. </s>

<s id="id.2.1.29.1.1.1.0">Quamuis autem AMLA æqualiter &longs;ecundùm ip&longs;os de directo <lb/>capiant; dicent forta&longs;&longs;e, quia tamen principium de&longs;cen&longs;us ex L <lb/>&longs;cilicet LD minus de directo capit, quàm principium de&longs;cen&longs;us <lb/>ex A, &longs;cilicet AN; pondus in A grauius erit, quàm in L. </s>

<s id="id.2.1.29.1.1.1.0.a">nam <lb/>cùm circumferentia AN ſit ipſi LD (vt ſupra poſitum eſt) <lb/>æqualis, quæ ſecundùm ipſos de directo capit CT; LD verò <lb/>de directo capit PO. </s>

<s id="id.2.1.29.1.1.1.0.a">nam <lb/>cùm circumferentia AN &longs;it ip&longs;i LD (vt &longs;upra po&longs;itum e&longs;t) <lb/>æqualis, quæ &longs;ecundùm ip&longs;os de directo capit CT; LD verò <lb/>de directo capit PO. </s>

<s id="id.2.1.29.1.1.1.0.b">ideo pondus grauius erit in A, quàm in L. <lb/>

<s id="id.2.1.29.1.1.1.0.b">ideo pondus grauius erit in A, quàm in L. <lb/></s>

</s>

<s id="id.2.1.29.1.1.1.0.c">quod &longs;i verum e&longs;&longs;et, &longs;equeretur idem pondus in eodem &longs;itu diuer<lb/>&longs;o duntaxat modo con&longs;ideratum in habitudine ad eundem &longs;itum, <lb/>tum grauius, tum leuius e&longs;&longs;e. </s>

<s id="id.2.1.29.1.1.1.0.c">quod ſi verum eſſet, ſequeretur idem pondus in eodem ſitu diuer<lb/>ſo duntaxat modo conſideratum in habitudine ad eundem ſitum, <lb/>tum grauius, tum leuius eſſe. </s>

<s id="id.2.1.29.1.1.2.0">quod e&longs;t impo&longs;sibile. </s>

<s id="id.2.1.29.1.1.2.0">quod eſt impoſsibile. </s>

<s id="id.2.1.29.1.1.3.0">hoc e&longs;t, &longs;i <lb/>de&longs;cen&longs;um con&longs;ideremus ponderis in L, quatenus ex L in A de<lb/>&longs;cendit, grauius erit, quàm &longs;i eiu&longs;dem ponderis de&longs;cen&longs;um con<lb/>&longs;ideremus ex L in D tantùm. </s>

<s id="id.2.1.29.1.1.3.0">hoc eſt, ſi <lb/>deſcenſum conſideremus ponderis in L, quatenus ex L in A de<lb/>ſcendit, grauius erit, quàm ſi eiuſdem ponderis deſcenſum con<lb/>ſideremus ex L in D tantùm. </s>

<s id="id.2.1.29.1.1.4.0">neq; enim negare po&longs;&longs;unt ex ei&longs;<lb/>demmet dictis, quin de&longs;cen&longs;us ponderis ex L in A de directo ca<lb/>piat LX, &longs;iue PC. </s>

<s id="id.2.1.29.1.1.4.0">neq; enim negare poſſunt ex eiſ<lb/>demmet dictis, quin deſcenſus ponderis ex L in A de directo ca<lb/>piat LX, ſiue PC. </s>

<s>de&longs;cen&longs;us verò AM, quin &longs;imiliter de directo <pb xlink:href="036/01/046.jpg"/>capiat XM: cùm ip&longs;i <lb/>quoq; hoc modo acci<lb/>piant, atq; ita accipe<lb/>re &longs;it nece&longs;&longs;e. </s>

<s id="N113DF">deſcenſus verò AM, quin ſimiliter de directo <pb xlink:href="036/01/046.jpg" xlink:type="simple"/>capiat XM: cùm ipſi <lb/>quoq; hoc modo acci<lb/>piant, atq; ita accipe<lb/>re ſit neceſſe. </s>

<s id="id.2.1.29.1.1.5.0">&longs;i enim li<lb/>bram DE in AB redire <lb/>demon&longs;trare volunt, com<lb/>parando de&longs;cen&longs;us pon<lb/>deris in D cum de&longs;cen<lb/>&longs;u ponderis in E, nece&longs;&longs;e <lb/>e&longs;t, vt o&longs;tendant rectum <lb/>de&longs;cen&longs;um OC corre<lb/>&longs;pondentem circumferen<lb/>tiæ DA maiorem e&longs;&longs;e re<lb/>cto de&longs;cen&longs;u TH circum<lb/><figure id="id.036.01.046.1.jpg" xlink:href="036/01/046/1.jpg"></figure><lb/>ferentiæ EV corre&longs;pondente. </s>

<s id="id.2.1.29.1.1.5.0">ſi enim li<lb/>bram DE in AB redire <lb/>demonſtrare volunt, com<lb/>parando deſcenſus pon<lb/>deris in D cum deſcen<lb/>ſu ponderis in E, neceſſe <lb/>eſt, vt oſtendant rectum <lb/>deſcenſum OC corre<lb/>ſpondentem circumferen<lb/>tiæ DA maiorem eſſe re<lb/>cto deſcenſu TH circum<lb/>

<s id="id.2.1.29.1.1.6.0">&longs;i enim partem tantùm totius de<lb/>&longs;cen&longs;us ex D in A acciperent, vt D k; o&longs;tenderentq; magis cape<lb/>re de directo de&longs;cen&longs;um Dk, quàm æqualis portio de&longs;cen&longs;us ex <lb/>puncto E. </s>

<s>&longs;equetur pondus in D &longs;ecundùm ip&longs;os grauius e&longs;&longs;e pon<lb/>dere in E; & v&longs;q; ad k tantùm deor&longs;um moueri: ita vt libra mo<lb/>ta &longs;it in kI. </s>

<lb/>ferentiæ EV correſpondente. </s>

<s>&longs;imiliter &longs;i libram KI in AB redire demon&longs;trare vo<lb/>lunt accipiendo portionem de&longs;cen&longs;us ex k in A; hoc e&longs;t k S; <lb/>o&longs;tenderentq; k S magis de directo capere, quàm ex aduer&longs;o æ<lb/>qualis de&longs;cen&longs;us ex puncto I: &longs;imili modo &longs;equetur pondus in k <lb/>grauius e&longs;&longs;e, quàm in I; & v&longs;q; ad S tantùm moueri. </s>

<s id="id.2.1.29.1.1.6.0">ſi enim partem tantùm totius de<lb/>ſcenſus ex D in A acciperent, vt D k; oſtenderentq; magis cape<lb/>re de directo deſcenſum Dk, quàm æqualis portio deſcenſus ex <lb/>puncto E. </s>

<s id="id.2.1.29.1.1.7.0">& &longs;i rur&longs;us <lb/>o&longs;tenderent portionem de&longs;cen&longs;us ex S in A, atq; ita deinceps, re<lb/>ctiorem e&longs;&longs;e æquali de&longs;cen&longs;u ponderis oppo&longs;iti; &longs;emper &longs;equetur <lb/>libram SI ad AB propius accedere, nunquam tamen in AB per<lb/>uenire demon&longs;trabunt. </s>

<s id="N11413">ſequetur pondus in D ſecundùm ipſos grauius eſſe pon<lb/>dere in E; & vſq; ad k tantùm deorſum moueri: ita vt libra mo<lb/>ta ſit in kI. </s>

<s id="id.2.1.29.1.1.8.0">&longs;i igitur libram DE in AB redire demon<lb/>&longs;trare volunt, nece&longs;&longs;e e&longs;t, vt de&longs;cen&longs;um ponderis ex D in A de di<lb/>recro capere quantitatem lineæ ex puncto D ip&longs;i AB ad rectos <lb/>angulos ductæ accipiant. </s>

<s id="N11419">ſimiliter ſi libram KI in AB redire demonſtrare vo<lb/>lunt accipiendo portionem deſcenſus ex k in A; hoc eſt k S; <lb/>oſtenderentq; k S magis de directo capere, quàm ex aduerſo æ<lb/>qualis deſcenſus ex puncto I: ſimili modo ſequetur pondus in k <lb/>grauius eſſe, quàm in I; & vſq; ad S tantùm moueri. </s>

<s id="id.2.1.29.1.1.9.0">atq; ita, &longs;i æquales de&longs;cen&longs;us DA AN <lb/>inuicem comparemus, qui æqualiter de directo capient OC CT, <lb/>eueniet idem pondus in D æquè graue e&longs;&longs;e, vt in A. </s>

<s id="id.2.1.29.1.1.7.0">& ſi rurſus <lb/>oſtenderent portionem deſcenſus ex S in A, atq; ita deinceps, re<lb/>ctiorem eſſe æquali deſcenſu ponderis oppoſiti; ſemper ſequetur <lb/>libram SI ad AB propius accedere, nunquam tamen in AB per<lb/>uenire demonſtrabunt. </s>

<s>&longs;i verò por<lb/>tiones tantum ex D A accipiamus; grauius erit in A, quàm <lb/>in D. </s>

<s id="id.2.1.29.1.1.8.0">ſi igitur libram DE in AB redire demon<lb/>ſtrare volunt, neceſſe eſt, vt deſcenſum ponderis ex D in A de di<lb/>recro capere quantitatem lineæ ex puncto D ipſi AB ad rectos <lb/>angulos ductæ accipiant. </s>

<s>ergo ex diuer&longs;itate tantùm modi con&longs;iderandi, idem pon<lb/>dus, & grauius, & leuius e&longs;&longs;e continget. </s>

<s id="id.2.1.29.1.1.9.0">atq; ita, ſi æquales deſcenſus DA AN <lb/>inuicem comparemus, qui æqualiter de directo capient OC CT, <lb/>eueniet idem pondus in D æquè graue eſſe, vt in A. </s>

<s id="id.2.1.29.1.1.10.0">non autem ex ip&longs;a na<pb n="17" xlink:href="036/01/047.jpg"/>tura rei. </s>

<s id="N1143E">ſi verò por<lb/>tiones tantum ex D A accipiamus; grauius erit in A, quàm <lb/>in D. </s>

<s id="id.2.1.29.1.1.11.0">In&longs;uper ip&longs;orum &longs;uppo&longs;itio non a&longs;&longs;erit, pondus &longs;ecun<lb/>dùm &longs;itum grauius e&longs;&longs;e, quantò in eodem &longs;itu minus obliquum <lb/>e&longs;t principium ip&longs;ius de&longs;cen&longs;us. </s>

<s id="N11444">ergo ex diuerſitate tantùm modi conſiderandi, idem pon<lb/>dus, & grauius, & leuius eſſe continget. </s>

<s id="id.2.1.29.1.1.12.0">Suppo&longs;itio igitur &longs;uperius alla<lb/>ta, hoc e&longs;t, &longs;ecundùm &longs;itum pondus grauius e&longs;&longs;e, quantò in eo <lb/>dem &longs;itu minus obliquus e&longs;t de&longs;cen&longs;us; non &longs;olum ex his, quæ <lb/>diximus, vllo modo concedi pote&longs;t; &longs;ed quoniam huius oppo&longs;i<lb/>tum o&longs;tendere quoq; non e&longs;t difficile: &longs;cilicet idem pondus in <lb/>æqualibus circumferentiis, quò minus obliquus e&longs;t de&longs;cen&longs;us, ibi <lb/>minus grauitare. </s>

<s id="id.2.1.29.1.1.10.0">non autem ex ipſa na<pb n="17" xlink:href="036/01/047.jpg" xlink:type="simple"/>tura rei. </s>

<s id="id.2.1.29.1.1.11.0">Inſuper ipſorum ſuppoſitio non aſſerit, pondus ſecun<lb/>dùm ſitum grauius eſſe, quantò in eodem ſitu minus obliquum <lb/>eſt principium ipſius deſcenſus. </s>

<s id="id.2.1.29.1.1.12.0">Suppoſitio igitur ſuperius alla<lb/>ta, hoc eſt, ſecundùm ſitum pondus grauius eſſe, quantò in eo <lb/>dem ſitu minus obliquus eſt deſcenſus; non ſolum ex his, quæ <lb/>diximus, vllo modo concedi poteſt; ſed quoniam huius oppoſi<lb/>tum oſtendere quoq; non eſt difficile: ſcilicet idem pondus in <lb/>æqualibus circumferentiis, quò minus obliquus eſt deſcenſus, ibi <lb/>minus grauitare. </s>

<s id="id.2.1.29.2.1.1.0">Sint enim vt prius cir<lb/>

<s id="id.2.1.29.2.1.1.0">Sint enim vt prius cir<lb/><expan abbr="cumferentræ">cumferentiae</expan> AL AM <lb/>inter &longs;e &longs;e æquales; &longs;itq; <lb/>punctum L propè F. </s>

<expan abbr="cumferentræ">cumferentiae</expan> AL AM <lb/>inter ſe ſe æquales; ſitq; <lb/>punctum L propè F. </s>

<s>& <lb/>connectatur LM, quæ <lb/>ip&longs;i AB perpendicularis <lb/>erit. </s>

<s id="N11475">& <lb/>connectatur LM, quæ <lb/>ipſi AB perpendicularis <lb/>erit. </s>

<s id="id.2.1.29.2.1.2.0">& LX ip&longs;i XM <lb/>æqualis. </s>

<s id="id.2.1.29.2.1.2.0">& LX ipſi XM <lb/>æqualis. </s>

<s id="id.2.1.29.2.1.3.0">deinde propè <lb/>M inter MG quoduis <lb/>accipiatur punctum P. <lb/>fiatq; circumferentia PO <lb/>circumferentiæ AM æ<lb/>qualis. </s>

<s id="id.2.1.29.2.1.4.0">erit punctum O <lb/><figure id="id.036.01.047.1.jpg" xlink:href="036/01/047/1.jpg"></figure><lb/>propè A. </s>

<s id="id.2.1.29.2.1.4.0">erit punctum O <lb/>

<s>connectanturq; CL, CO, CM, CP, OP. </s>

<s>& à <lb/>puncto P ip&longs;i OC perpendicularis ducatur PN. </s>

<lb/>propè A. </s>

<s id="id.2.1.29.2.1.4.0.a">& quoniam cir<lb/>cumferentia AM circumferentiæ OP e&longs;t æqualis: erit angu<lb/>lus <arrow.to.target n="note51"></arrow.to.target>ACM æqualis angulo OCP; & angulus CXM rectus re<lb/>cto CNP e&longs;t æqualis: erit quoq; reliquus XMC trianguli MCX <arrow.to.target n="note52"></arrow.to.target><lb/>reliquo NPC trianguli PCN æqualis. </s>

<s id="N1149A">connectanturq; CL, CO, CM, CP, OP. </s>

<s id="id.2.1.29.2.1.5.0">&longs;ed & latus CM lateri <arrow.to.target n="note53"></arrow.to.target><lb/>CP e&longs;t æquale: ergo triangulum MCX triangulo PCN æquale <lb/>erit. </s>

<s id="N1149C">& à <lb/>puncto P ipſi OC perpendicularis ducatur PN. </s>

<s id="id.2.1.29.2.1.6.0">latu&longs;q; MX lateri NP æquale. </s>

<s id="id.2.1.29.2.1.4.0.a">& quoniam cir<lb/>cumferentia AM circumferentiæ OP eſt æqualis: erit angu<lb/>lus <arrow.to.target n="note51" xlink:type="simple"/>ACM æqualis angulo OCP; & angulus CXM rectus re<lb/>cto CNP eſt æqualis: erit quoq; reliquus XMC trianguli MCX <arrow.to.target n="note52" xlink:type="simple"/>

<s id="id.2.1.29.2.1.7.0">quare linea PN ip&longs;i LX æqua<lb/>lis erit. </s>

<lb/>reliquo NPC trianguli PCN æqualis. </s>

<s id="id.2.1.29.2.1.8.0">ducatur præterea à puncto O linea OT ip&longs;i AC æqui<lb/>di&longs;tans, quæ NP &longs;ecet in V. </s>

<s id="id.2.1.29.2.1.5.0">ſed & latus CM lateri <arrow.to.target n="note53" xlink:type="simple"/>

<s>atq; ip&longs;i OT à puncto P perpendi<lb/>cularis ducatur, quæ quidem inter OV cadere non pote&longs;t; nam <lb/>cùm angulus ONV &longs;it rectus; erit OVN acutus. </s>

<lb/>CP eſt æquale: ergo triangulum MCX triangulo PCN æquale <lb/>erit. </s>

<s id="id.2.1.29.2.1.9.0">quare OVP <arrow.to.target n="note54"></arrow.to.target><lb/>obtu&longs;us erit. </s>

<s id="id.2.1.29.2.1.6.0">latuſq; MX lateri NP æquale. </s>

<s id="id.2.1.29.2.1.10.0">non igitur linea à puncto P ip&longs;i OT intra OV <pb xlink:href="036/01/048.jpg"/>perpendicularis cadet. </s>

<s id="id.2.1.29.2.1.7.0">quare linea PN ipſi LX æqua<lb/>lis erit. </s>

<s id="id.2.1.29.2.1.11.0"><lb/>duo enim anguli vnius <lb/>trianguli, vnus quidem <lb/>rectus, alter verò ob<lb/>tu&longs;us e&longs;&longs;et. </s>

<s id="id.2.1.29.2.1.8.0">ducatur præterea à puncto O linea OT ipſi AC æqui<lb/>diſtans, quæ NP ſecet in V. </s>

<s id="id.2.1.29.2.1.12.0">quod e&longs;t im<lb/>po&longs;sibile. </s>

<s id="N114C9">atq; ipſi OT à puncto P perpendi<lb/>cularis ducatur, quæ quidem inter OV cadere non poteſt; nam <lb/>cùm angulus ONV ſit rectus; erit OVN acutus. </s>

<s id="id.2.1.29.2.1.13.0">cadet ergo in <lb/>linea OT in parte VT. <lb/></s>

<s id="id.2.1.29.2.1.9.0">quare OVP <arrow.to.target n="note54" xlink:type="simple"/>

<s>&longs;itq; PT. erit PT &longs;ecun<lb/>dùm ip&longs;os rectus circum<lb/>ferentiæ OP de&longs;cen&longs;us. </s>

<lb/>obtuſus erit. </s>

<s id="id.2.1.29.2.1.14.0"><lb/>Quoniam igitur angulus <lb/>ONV e&longs;t rectus; erit <lb/><arrow.to.target n="note55"></arrow.to.target>linea OV ip&longs;a ON ma<lb/>ior. </s>

<s id="id.2.1.29.2.1.10.0">non igitur linea à puncto P ipſi OT intra OV <pb xlink:href="036/01/048.jpg" xlink:type="simple"/>perpendicularis cadet. </s>

<s id="id.2.1.29.2.1.15.0">quare OT ip&longs;a <lb/><figure id="id.036.01.048.1.jpg" xlink:href="036/01/048/1.jpg"></figure><lb/>quoq; ON maior exi&longs;tet. </s>

<s id="id.2.1.29.2.1.16.0">Cùm itaq; linèa OP angulos &longs;ubten<lb/>dat rectos ONP OTP; erit quadratum ex OP quadratis ex <lb/><arrow.to.target n="note56"></arrow.to.target>ON NP &longs;imul &longs;umptis æquale. </s>

<lb/>duo enim anguli vnius <lb/>trianguli, vnus quidem <lb/>rectus, alter verò ob<lb/>tuſus eſſet. </s>

<s id="id.2.1.29.2.1.17.0">&longs;imiliter quadratis ex OT TP <lb/>&longs;imul æquale. </s>

<s id="id.2.1.29.2.1.12.0">quod eſt im<lb/>poſsibile. </s>

<s id="id.2.1.29.2.1.18.0">quare quadrata &longs;imul ex ON NP quadratis ex <lb/>OT TP &longs;imul æqualia erunt. </s>

<s id="id.2.1.29.2.1.13.0">cadet ergo in <lb/>linea OT in parte VT. <lb/>

<s id="id.2.1.29.2.1.19.0">quadratum autem ex OT maius <lb/>e&longs;t quadrato ex ON; cum linea OT &longs;it ip&longs;a ON maior. </s>

</s>

<s id="N114F3">ſitq; PT. erit PT ſecun<lb/>dùm ipſos rectus circum<lb/>ferentiæ OP deſcenſus. </s>

<lb/>Quoniam igitur angulus <lb/>ONV eſt rectus; erit <lb/>

<arrow.to.target n="note55" xlink:type="simple"/>linea OV ipſa ON ma<lb/>ior. </s>

<s id="id.2.1.29.2.1.15.0">quare OT ipſa <lb/>

<lb/>quoq; ON maior exiſtet. </s>

<s id="id.2.1.29.2.1.16.0">Cùm itaq; linèa OP angulos ſubten<lb/>dat rectos ONP OTP; erit quadratum ex OP quadratis ex <lb/>

<arrow.to.target n="note56" xlink:type="simple"/>ON NP ſimul ſumptis æquale. </s>

<s id="id.2.1.29.2.1.17.0">ſimiliter quadratis ex OT TP <lb/>ſimul æquale. </s>

<s id="id.2.1.29.2.1.18.0">quare quadrata ſimul ex ON NP quadratis ex <lb/>OT TP ſimul æqualia erunt. </s>

<s id="id.2.1.29.2.1.19.0">quadratum autem ex OT maius <lb/>eſt quadrato ex ON; cum linea OT ſit ipſa ON maior. </s>

<s id="id.2.1.29.2.1.20.0">ergo qua<lb/>dratum ex NP maius erit quadrato ex TP. </s>

<s id="N1152F">ac propterea linea <lb/>TP minor erit linea PN, & linea LX. </s>

<s>ac propterea linea <lb/>TP minor erit linea PN, & linea LX. </s>

<s id="N11533">minus obliquus igitur eſt <lb/>deſcenſus arcus LA, quàm arcus OP. </s>

<s>minus obliquus igitur e&longs;t <lb/>de&longs;cen&longs;us arcus LA, quàm arcus OP. </s>

<s id="id.2.1.29.2.1.20.0.a">ergo pondus in L, ex ip<lb/>ſorum dictis, grauius erit, quàm in O. quod ex iis, quæ ſupra di<lb/>ximus eſt manifeſtè falſum, cùm pondus in O grauius ſit, quàm <lb/>in L. </s>

<s id="id.2.1.29.2.1.20.0.a">ergo pondus in L, ex ip<lb/>&longs;orum dictis, grauius erit, quàm in O. quod ex iis, quæ &longs;upra di<lb/>ximus e&longs;t manife&longs;tè fal&longs;um, cùm pondus in O grauius &longs;it, quàm <lb/>in L. </s>

<s id="id.2.1.29.2.1.20.0.b">non igitur ex rectiori, & obliquiori motu ita accepto col<lb/>ligi poteſt, ſecundùm ſitum pondus grauius eſſe, quantò in eo<lb/>dem ſitu minus obliquus eſt deſcenſus. </s>

<s id="id.2.1.29.2.1.20.0.b">non igitur ex rectiori, & obliquiori motu ita accepto col<lb/>ligi pote&longs;t, &longs;ecundùm &longs;itum pondus grauius e&longs;&longs;e, quantò in eo<lb/>dem &longs;itu minus obliquus e&longs;t de&longs;cen&longs;us. </s>

<s id="id.2.1.29.2.1.21.0">Atq; hinc oritur omnis <lb/>fermé ipſorum error in hac re, atq; deceptio: nam quamuis per <lb/>accidens interdum ex falſis ſequatur verum, per ſe tamen ex fal<lb/>ſis falſum ſequitur, quemadmodum ex veris ſemper verum, nil <lb/>idcirco mirum, ſi dum falſa accipiunt; illiſq; tanquam veriſsi<lb/>mis innituntur; falſiſsima omninò colligunt, atq; concludunt. </s>

<s id="id.2.1.29.2.1.21.0">Atq; hinc oritur omnis <lb/>fermé ip&longs;orum error in hac re, atq; deceptio: nam quamuis per <lb/>accidens interdum ex fal&longs;is &longs;equatur verum, per &longs;e tamen ex fal<lb/>&longs;is fal&longs;um &longs;equitur, quemadmodum ex veris &longs;emper verum, nil <lb/>idcirco mirum, &longs;i dum fal&longs;a accipiunt; illi&longs;q; tanquam veri&longs;si<lb/>mis innituntur; fal&longs;i&longs;sima omninò colligunt, atq; concludunt. </s>

<s id="id.2.1.29.2.1.22.0"><lb/>decipiuntur quinetiam, dùm libræ contemplationem mathemati<lb/>cè &longs;impliciter a&longs;&longs;ummunt; cùm eius con&longs;ideratio &longs;it pror&longs;us me<lb/>chanica: nec vllo modo ab&longs;q; vero motu, ac ponderibus (en<pb n="18" xlink:href="036/01/049.jpg"/>tibus omninò naturalibus) de ip&longs;a &longs;ermo haberi po&longs;sit: &longs;ine qui<lb/>bus eorum, quæ libræ accidunt, veræ caulæ reperiri nullo mo <lb/>do po&longs;sint. </s>

<lb/>decipiuntur quinetiam, dùm libræ contemplationem mathemati<lb/>cè ſimpliciter aſſummunt; cùm eius conſideratio ſit prorſus me<lb/>chanica: nec vllo modo abſq; vero motu, ac ponderibus (en<pb n="18" xlink:href="036/01/049.jpg" xlink:type="simple"/>tibus omninò naturalibus) de ipſa ſermo haberi poſsit: ſine qui<lb/>bus eorum, quæ libræ accidunt, veræ caulæ reperiri nullo mo <lb/>do poſsint. </s>

<s id="id.2.1.30.1.1.1.0"><margin.target id="note51"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 27 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

<margin.target id="note51"/>

<s id="id.2.1.30.1.1.2.0"><margin.target id="note52"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 32 <emph type="italics"/>primi.<emph.end type="italics"/></s>

<emph type="italics"/>Ex<emph.end type="italics"/> 27 <emph type="italics"/>Tertii.<emph.end type="italics"/>

<s id="id.2.1.30.1.1.3.0"><margin.target id="note53"></margin.target>26 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.30.1.1.4.0"><margin.target id="note54"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 13 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<s id="id.2.1.30.1.1.5.0"><margin.target id="note55"></margin.target>19 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note52"/>

<s id="id.2.1.30.1.1.6.0"><margin.target id="note56"></margin.target>47 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<emph type="italics"/>Ex<emph.end type="italics"/> 32 <emph type="italics"/>primi.<emph.end type="italics"/>

</s>

<margin.target id="note53"/>26 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<margin.target id="note54"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 13 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<margin.target id="note55"/>19 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<margin.target id="note56"/>47 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.31.1.1.1.0">Præterea ſi adhuc ſup<lb/>poſitionem conceda<lb/>mus; à conſideratione <lb/>libræ longè recedunt; <lb/>dum eo pacto, vt libra <lb/>DE in AB redire de<lb/>beat, diſcurrunt. </s>

<s id="id.2.1.31.1.1.1.0">Præterea &longs;i adhuc &longs;up<lb/>po&longs;itionem conceda<lb/>mus; à con&longs;ideratione <lb/>libræ longè recedunt; <lb/>dum eo pacto, vt libra <lb/>DE in AB redire de<lb/>beat, di&longs;currunt. </s>

<s id="id.2.1.31.1.1.2.0">ſemper <lb/>enim alterum pondus <lb/>ſeorſum accipiunt, putá <lb/>D, vel E; ac ſi modò <expan abbr="vnũ">vnum</expan>

<s id="id.2.1.31.1.1.2.0">&longs;emper <lb/>enim alterum pondus <lb/>&longs;eor&longs;um accipiunt, putá <lb/>D, vel E; ac &longs;i modò <expan abbr="vn&utilde;">vnum</expan> <lb/>modò alterum in libra <lb/>con&longs;titutum e&longs;&longs;et, nec <lb/>vllo modo ambo con<lb/><figure id="id.036.01.049.1.jpg" xlink:href="036/01/049/1.jpg"></figure><lb/>nexa; cuius tamen oppo&longs;itum omninò fieri oportet; neq; alterum <lb/>&longs;ine altero rectè con&longs;iderari pote&longs;t; cùm de ip&longs;is in libra con&longs;ti<lb/>tutis &longs;ermo habeatur. </s>

<lb/>modò alterum in libra <lb/>conſtitutum eſſet, nec <lb/>vllo modo ambo con<lb/>

<s id="id.2.1.31.1.1.3.0">cùm enim dicunt, de&longs;cen&longs;um ponderis in <lb/>D minus obliquum e&longs;&longs;e de&longs;cen&longs;u ponderis in E; erit pondus in <lb/>D per &longs;uppo&longs;itionem grauius pondere in E: quare cùm &longs;it graui<lb/>us, nece&longs;&longs;e e&longs;t deor&longs;um moueri, libramq; DE in AB redire: di<lb/>&longs;cur&longs;us i&longs;te nullius pror&longs;us momenti e&longs;t. </s>

<s id="id.2.1.31.1.1.4.0">Primùm quidem &longs;em<lb/>per argumentantur, ac &longs;i pondera in DE de&longs;cendere debeant, <lb/>vnius tantùm &longs;ine alterius connexione con&longs;iderando de&longs;cen&longs;um. </s>

<lb/>nexa; cuius tamen oppoſitum omninò fieri oportet; neq; alterum <lb/>ſine altero rectè conſiderari poteſt; cùm de ipſis in libra conſti<lb/>tutis ſermo habeatur. </s>

<s id="id.2.1.31.1.1.5.0"><lb/>po&longs;tremò tamen ob ponderum de&longs;cen&longs;uum comparationem colli<lb/>gentes inferunt, pondus in D deor&longs;um moueri, & pondus in E <lb/>&longs;ur&longs;um, vtraq; &longs;imul in libra inuicem connexa accipientes. </s>

<s id="id.2.1.31.1.1.3.0">cùm enim dicunt, deſcenſum ponderis in <lb/>D minus obliquum eſſe deſcenſu ponderis in E; erit pondus in <lb/>D per ſuppoſitionem grauius pondere in E: quare cùm ſit graui<lb/>us, neceſſe eſt deorſum moueri, libramq; DE in AB redire: di<lb/>ſcurſus iſte nullius prorſus momenti eſt. </s>

<s id="id.2.1.31.1.1.6.0">ve<lb/>rùm ex ii&longs;demmet, quibus vtuntur, principiis, ac demon&longs;tratio<lb/>nibus, oppo&longs;itum eius, quod defendere conantur, facillimè col<lb/>ligi pote&longs;t. </s>

<s id="id.2.1.31.1.1.4.0">Primùm quidem ſem<lb/>per argumentantur, ac ſi pondera in DE deſcendere debeant, <lb/>vnius tantùm ſine alterius connexione conſiderando deſcenſum. </s>

<s id="id.2.1.31.1.1.7.0">Nam &longs;i comparetur de&longs;cen&longs;us ponderis in D cum a<lb/>&longs;cen&longs;u ponderis in E, vt ductis EK DH ip&longs;i AB perpendicula<lb/>ribus; cùm angulus DCH &longs;it æqualis angulo ECk; & angulus <arrow.to.target n="note57"></arrow.to.target><lb/>DHC rectus æqualis e&longs;t recto E k C; & latus DC lateri CE æqua <lb/>le: erit triangulum CDH triangulo CEk æquale, & latus DH la<arrow.to.target n="note58"></arrow.to.target><pb xlink:href="036/01/050.jpg"/>teri Ek æquale. </s>

<s id="id.2.1.31.1.1.8.0">cùm <lb/>autem angulus DCA <lb/>&longs;it angulo ECB æqua<lb/>lis: erit quoq; circum<lb/>ferentia DA <expan abbr="cirferen">circumferen</expan><lb/>tiæ BE æqualis. </s>

<lb/>poſtremò tamen ob ponderum deſcenſuum comparationem colli<lb/>gentes inferunt, pondus in D deorſum moueri, & pondus in E <lb/>ſurſum, vtraq; ſimul in libra inuicem connexa accipientes. </s>

<s id="id.2.1.31.1.1.9.0">dum <lb/>itaq; pondus in D de<lb/>&longs;cendit per circumfe<lb/>rentiam DA, pondus <lb/>in E per circumferen<lb/>tiam EB ip&longs;i DA æ<lb/>qualem a&longs;cendit. </s>

<s id="id.2.1.31.1.1.6.0">ve<lb/>rùm ex iiſdemmet, quibus vtuntur, principiis, ac demonſtratio<lb/>nibus, oppoſitum eius, quod defendere conantur, facillimè col<lb/>ligi poteſt. </s>

<s id="id.2.1.31.1.1.10.0">& de<lb/>&longs;cen&longs;us <expan abbr="põderis">ponderis</expan> in D de <lb/>directo (more <expan abbr="ip&longs;or&utilde;">ip&longs;orum</expan>) <lb/><figure id="id.036.01.050.1.jpg" xlink:href="036/01/050/1.jpg"></figure><lb/>capiet DH; a&longs;cen&longs;us verò ponderis in E de directo capiet Ek ip<lb/>&longs;i DH æqualem: erit itaq; de&longs;cen&longs;us ponderis in D a&longs;cen&longs;ui pon<lb/>deris in E æqualis, & qualis erit propen&longs;io vnius ad motum deor<lb/>sum, talis etiam erit re&longs;i&longs;tentia alterius ad motum &longs;ur&longs;um. </s>

<s id="id.2.1.31.1.1.7.0">Nam ſi comparetur deſcenſus ponderis in D cum a<lb/>ſcenſu ponderis in E, vt ductis EK DH ipſi AB perpendicula<lb/>ribus; cùm angulus DCH ſit æqualis angulo ECk; & angulus <arrow.to.target n="note57" xlink:type="simple"/>

<s id="id.2.1.31.1.1.11.0">re<lb/>&longs;i&longs;tentia &longs;cilicet violentiæ ponderis in E in a&longs;cen&longs;u naturali po<lb/>tentiæ ponderis in D in de&longs;cen&longs;u contrà nitendo apponitur; cùm <lb/>&longs;it ip&longs;i æqualis. </s>

<lb/>DHC rectus æqualis eſt recto E k C; & latus DC lateri CE æqua <lb/>le: erit triangulum CDH triangulo CEk æquale, & latus DH la-<arrow.to.target n="note58" xlink:type="simple"/>

<s id="id.2.1.31.1.1.12.0">quò enim pondus in D naturali potentia deor<lb/>&longs;um velocius de&longs;cendit, eò tardius pondus in E violenter a&longs;cendit. </s>

<pb xlink:href="036/01/050.jpg" xlink:type="simple"/>teri Ek æquale. </s>

<s id="id.2.1.31.1.1.13.0"><lb/>quare neutrum ip&longs;orum alteri præponderabit, cùm ab æquali non <lb/>proueniat actio. </s>

<s id="id.2.1.31.1.1.8.0">cùm <lb/>autem angulus DCA <lb/>ſit angulo ECB æqua<lb/>lis: erit quoq; circum<lb/>ferentia DA <expan abbr="cirferen">circumferen</expan><lb/>tiæ BE æqualis. </s>

<s id="id.2.1.31.1.1.14.0">Non igitur pondus in D pondus in E &longs;ur&longs;um <lb/>mouebit. </s>

<s id="id.2.1.31.1.1.9.0">dum <lb/>itaq; pondus in D de<lb/>ſcendit per circumfe<lb/>rentiam DA, pondus <lb/>in E per circumferen<lb/>tiam EB ipſi DA æ<lb/>qualem aſcendit. </s>

<s id="id.2.1.31.1.1.15.0">&longs;i enim moueret; nece&longs;&longs;e e&longs;&longs;et, pondus in D maiorem <lb/>habere virtutem de&longs;cendendo, quàm pondus in E a&longs;cendendo; <lb/>&longs;ed hæc &longs;unt æqualia: ergo pondera manebunt. </s>

<s id="id.2.1.31.1.1.10.0">& de<lb/>ſcenſus <expan abbr="põderis">ponderis</expan> in D de <lb/>directo (more <expan abbr="ipſorũ">ipſorum</expan>) <lb/>

<s id="id.2.1.31.1.1.16.0">& grauitas pon<lb/>deris in D grauitati ponderis in E æqualis erit. </s>

<s id="id.2.1.31.1.1.17.0">Præterea quoniam <lb/>&longs;upponunt, quò pondus à linea directionis FG magis di&longs;tat, eò <lb/>grauius e&longs;&longs;e: Idcirco ductis quoq; à punctis DE ip&longs;i FG perpen<lb/>dicularibus DO EI; &longs;imili modo demon&longs;trabitur, triangulum <lb/>CDO triangulo CEI æqualem e&longs;&longs;e: & lineam DO ip&longs;i EI æqua<lb/>lem. </s>

<lb/>capiet DH; aſcenſus verò ponderis in E de directo capiet Ek ip<lb/>ſi DH æqualem: erit itaq; deſcenſus ponderis in D aſcenſui pon<lb/>deris in E æqualis, & qualis erit propenſio vnius ad motum deor<lb/>sum, talis etiam erit reſiſtentia alterius ad motum ſurſum. </s>

<s id="id.2.1.31.1.1.18.0">tam igitur di&longs;tat à linea FG pondus in D, quàm pondus in <lb/>E. </s>

<s id="id.2.1.31.1.1.11.0">re<lb/>ſiſtentia ſcilicet violentiæ ponderis in E in aſcenſu naturali po<lb/>tentiæ ponderis in D in deſcenſu contrà nitendo apponitur; cùm <lb/>ſit ipſi æqualis. </s>

<s>ex ip&longs;orum igitur rationibus, atq; &longs;uppo&longs;itionibus, pondera <lb/>in DE æquè grauia erunt. </s>

<s id="id.2.1.31.1.1.12.0">quò enim pondus in D naturali potentia deor<lb/>ſum velocius deſcendit, eò tardius pondus in E violenter aſcendit. </s>

<s id="id.2.1.31.1.1.19.0">Amplius quid prohibet, quin libram <lb/>DE ex nece&longs;sitate in FG moueri &longs;imili ratione o&longs;tendatur? </s>

<s id="id.2.1.31.1.1.20.0">Pri<pb n="19" xlink:href="036/01/051.jpg"/>mùm quidem ex eorummet demon&longs;trationibus colligi pote&longs;t, a<lb/>&longs;cen&longs;um ponderis in E ver&longs;us B rectiorem e&longs;&longs;e a&longs;cen&longs;u ponderis <lb/>in D ver&longs;us F; hoc e&longs;t minus capere de directo a&longs;cen&longs;um pon<lb/>deris in D in arcubus æqualibus a&longs;cen&longs;u ponderis in E. </s>

<lb/>quare neutrum ipſorum alteri præponderabit, cùm ab æquali non <lb/>proueniat actio. </s>

<s id="id.2.1.31.1.1.20.0.a">&longs;uppona<lb/>tur ergo &longs;ecundùm &longs;itum pondus leuius e&longs;&longs;e, quantò in eodem &longs;i<lb/>tu minus rectus e&longs;t a&longs;cen&longs;us: quæ quidem &longs;uppo&longs;itio, adeò ma<lb/>nife&longs;ta e&longs;&longs;e videtur, veluti ip&longs;orum altera. </s>

<s id="id.2.1.31.1.1.14.0">Non igitur pondus in D pondus in E ſurſum <lb/>mouebit. </s>

<s id="id.2.1.31.1.1.21.0">Quoniam igitur a&longs;cen<lb/>&longs;us ponderis in E rectior e&longs;t a&longs;cen&longs;u ponderis in D; per &longs;uppo&longs;i<lb/>tionem pondus in D leuius erit pondere in E. ergo pondus in <lb/>D &longs;ur&longs;um à pondere in E mouebitur, ita vt libra in FG perue<lb/>niat. </s>

<s id="id.2.1.31.1.1.15.0">ſi enim moueret; neceſſe eſſet, pondus in D maiorem <lb/>habere virtutem deſcendendo, quàm pondus in E aſcendendo; <lb/>ſed hæc ſunt æqualia: ergo pondera manebunt. </s>

<s id="id.2.1.31.1.1.22.0">atq; ita demon&longs;trari poterit, libram DE in FG moueri.<lb/></s>

<s id="id.2.1.31.1.1.16.0">& grauitas pon<lb/>deris in D grauitati ponderis in E æqualis erit. </s>

<s id="id.2.1.31.1.1.23.0">quæ quidem demon&longs;tratio inutilis e&longs;t pror&longs;us, ea&longs;demq; patitur <lb/>difficultates. </s>

<s id="id.2.1.31.1.1.17.0">Præterea quoniam <lb/>ſupponunt, quò pondus à linea directionis FG magis diſtat, eò <lb/>grauius eſſe: Idcirco ductis quoq; à punctis DE ipſi FG perpen<lb/>dicularibus DO EI; ſimili modo demonſtrabitur, triangulum <lb/>CDO triangulo CEI æqualem eſſe: & lineam DO ipſi EI æqua<lb/>lem. </s>

<s id="id.2.1.31.1.1.24.0">licet enim tanquàm verum admittatur pondus in E <lb/>a&longs;cendendo grauius e&longs;&longs;e pondere in D &longs;imiliter a&longs;cendendo, <lb/>non tamen ex hoc &longs;equitur, pondus in E de&longs;cendendo grauius <lb/>e&longs;&longs;e pondere in D a&longs;cendendo. </s>

<s id="id.2.1.31.1.1.18.0">tam igitur diſtat à linea FG pondus in D, quàm pondus in <lb/>E. </s>

<s id="id.2.1.31.1.1.25.0">Neutra igitur harum demon<lb/>&longs;trationum libram DE, vel in AB redire, vel in FG moue<lb/>ri, o&longs;tendentium, vera e&longs;t. </s>

<s id="N11690">ex ipſorum igitur rationibus, atq; ſuppoſitionibus, pondera <lb/>in DE æquè grauia erunt. </s>

<s id="id.2.1.31.1.1.19.0">Amplius quid prohibet, quin libram <lb/>DE ex neceſsitate in FG moueri ſimili ratione oſtendatur? </s>

<s id="id.2.1.31.1.1.20.0">Pri<pb n="19" xlink:href="036/01/051.jpg" xlink:type="simple"/>mùm quidem ex eorummet demonſtrationibus colligi poteſt, a<lb/>ſcenſum ponderis in E verſus B rectiorem eſſe aſcenſu ponderis <lb/>in D verſus F; hoc eſt minus capere de directo aſcenſum pon<lb/>deris in D in arcubus æqualibus aſcenſu ponderis in E. </s>

<s id="id.2.1.31.1.1.20.0.a">ſuppona<lb/>tur ergo ſecundùm ſitum pondus leuius eſſe, quantò in eodem ſi<lb/>tu minus rectus eſt aſcenſus: quæ quidem ſuppoſitio, adeò ma<lb/>nifeſta eſſe videtur, veluti ipſorum altera. </s>

<s id="id.2.1.31.1.1.21.0">Quoniam igitur aſcen<lb/>ſus ponderis in E rectior eſt aſcenſu ponderis in D; per ſuppoſi<lb/>tionem pondus in D leuius erit pondere in E. ergo pondus in <lb/>D ſurſum à pondere in E mouebitur, ita vt libra in FG perue<lb/>niat. </s>

<s id="id.2.1.31.1.1.22.0">atq; ita demonſtrari poterit, libram DE in FG moueri.<lb/>

</s>

<s id="id.2.1.31.1.1.23.0">quæ quidem demonſtratio inutilis eſt prorſus, eaſdemq; patitur <lb/>difficultates. </s>

<s id="id.2.1.31.1.1.24.0">licet enim tanquàm verum admittatur pondus in E <lb/>aſcendendo grauius eſſe pondere in D ſimiliter aſcendendo, <lb/>non tamen ex hoc ſequitur, pondus in E deſcendendo grauius <lb/>eſſe pondere in D aſcendendo. </s>

<s id="id.2.1.31.1.1.25.0">Neutra igitur harum demon<lb/>ſtrationum libram DE, vel in AB redire, vel in FG moue<lb/>ri, oſtendentium, vera eſt. </s>

<s id="id.2.1.32.1.1.1.0"><margin.target id="note57"></margin.target>15 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note57"/>15 <emph type="italics"/>Primi.<emph.end type="italics"/>

<s id="id.2.1.32.1.1.2.0"><margin.target id="note58"></margin.target>26 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

</s>

<margin.target id="note58"/>26 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.33.1.1.1.0">Præterea ſi ipſorum ſuppoſitionem, eorumq; verborum vim <lb/>rectè perpendamus; alium certè habere ſenſum conſpiciemus. </s>

<s id="id.2.1.33.1.1.1.0">Præterea &longs;i ip&longs;orum &longs;uppo&longs;itionem, eorumq; verborum vim <lb/>rectè perpendamus; alium certè habere &longs;en&longs;um con&longs;piciemus. </s>

<s id="id.2.1.33.1.1.2.0">nam <lb/>cùm ſemper ſpatium, per quod naturaliter pondus mouetur, à cen<lb/>tro grauitatis ipſius ponderis ad centrum mundi, inſtar rectæ li<lb/>neæ à centro grauitatis ad centrum mundi productæ, ſit ſumendum; <lb/>tantò huiusmodi ponderis deſcenſus, magis, minusuè obliquus <lb/>dicetur; quantò ſecundùm ſpatium inſtar prædictæ lineæ deſigna <lb/>tum, magis, aut minus (naturalem tamen locum petens, ſemperq; <lb/>magis ipſi appropinquans) mouebitur; ita vt tantò obliquior de<lb/>ſcenſus dicatur, quantò recedit ab eiuſmodi ſpatio: rectior verò, <lb/>quantò ad idem accedit. </s>

<s id="id.2.1.33.1.1.2.0">nam <lb/>cùm &longs;emper &longs;patium, per quod naturaliter pondus mouetur, à cen<lb/>tro grauitatis ip&longs;ius ponderis ad centrum mundi, in&longs;tar rectæ li<lb/>neæ à centro grauitatis ad centrum mundi productæ, &longs;it &longs;umendum; <lb/>tantò huiusmodi ponderis de&longs;cen&longs;us, magis, minusuè obliquus <lb/>dicetur; quantò &longs;ecundùm &longs;patium in&longs;tar prædictæ lineæ de&longs;igna <lb/>tum, magis, aut minus (naturalem tamen locum petens, &longs;emperq; <lb/>magis ip&longs;i appropinquans) mouebitur; ita vt tantò obliquior de<lb/>&longs;cen&longs;us dicatur, quantò recedit ab eiu&longs;modi &longs;patio: rectior verò, <lb/>quantò ad idem accedit. </s>

<s id="id.2.1.33.1.1.3.0">& in hoc ſenſu ſuppoſitio illa nemini <lb/>difficultatem parere debet, adeò enim veritas eius conſpicua eſt; <lb/>rationiq; conſentanea: vt nulla proſus manifeſtatione egere vi<lb/>deatur. </s>

<s id="id.2.1.33.1.1.3.0">& in hoc &longs;en&longs;u &longs;uppo&longs;itio illa nemini <lb/>difficultatem parere debet, adeò enim veritas eius con&longs;picua e&longs;t; <lb/>rationiq; con&longs;entanea: vt nulla pro&longs;us manife&longs;tatione egere vi<lb/>deatur. </s>

<s id="id.2.1.33.3.1.1.0">Si itaq; pondus ſolutum in ſitu D <lb/>collocatum ad propium locum mo<lb/>ueri debeat; proculdubio poſito cen<lb/>tro mundi S, per lineam DS moue<lb/>bitur. </s>

<s id="id.2.1.33.3.1.1.0">Si itaq; pondus &longs;olutum in &longs;itu D <lb/>collocatum ad propium locum mo<lb/>ueri debeat; proculdubio po&longs;ito cen<lb/>tro mundi S, per lineam DS moue<lb/>bitur. </s>

<s id="id.2.1.33.3.1.2.0">ſimiliter pondus in E ſolutum <lb/>per lineam ES mouebitur. </s>

<s id="id.2.1.33.3.1.2.0">&longs;imiliter pondus in E &longs;olutum <lb/>per lineam ES mouebitur. </s>

<s id="id.2.1.33.3.1.3.0">quare ſi <lb/>(vt rei veritas eſt) ponderis deſcen<lb/>ſus magis, minuſuè obliquus dicetur <lb/>ſecundùm receſſum, & acceſſum ad <lb/>ſpatia per lineas DSES deſignata, <lb/>iuxta naturales ipſorum ad propria lo <lb/>ca lationes; conſpicuum eſt, minus <lb/>obliquum eſſe deſcenſum ipſius E <lb/>per EG, quàm ipſius D per DA: <lb/>cùm angulum SEG angulo SDA <lb/>minorem eſſe ſupra oſtenſum ſit. </s>

<s id="id.2.1.33.3.1.3.0">quare &longs;i <lb/>(vt rei veritas e&longs;t) ponderis de&longs;cen<lb/>&longs;us magis, minu&longs;uè obliquus dicetur <lb/>&longs;ecundùm rece&longs;&longs;um, & acce&longs;&longs;um ad <lb/>&longs;patia per lineas DSES de&longs;ignata, <lb/>iuxta naturales ip&longs;orum ad propria lo <lb/>ca lationes; con&longs;picuum e&longs;t, minus <lb/>obliquum e&longs;&longs;e de&longs;cen&longs;um ip&longs;ius E <lb/>per EG, quàm ip&longs;ius D per DA: <lb/>cùm angulum SEG angulo SDA <lb/>minorem e&longs;&longs;e &longs;upra o&longs;ten&longs;um &longs;it. </s>

<s id="id.2.1.33.3.1.4.0">qua <lb/>re in E pondus magis grauitabit, <lb/>quàm in D. quod eſt penitus oppo<lb/>ſitum eius, quod ipſi oſtendere cona<lb/>ti ſunt. </s>

<s id="id.2.1.33.3.1.4.0">qua <lb/>re in E pondus magis grauitabit, <lb/>quàm in D. quod e&longs;t penitus oppo<lb/>&longs;itum eius, quod ip&longs;i o&longs;tendere cona<lb/>ti &longs;unt. </s>

<s id="id.2.1.33.3.1.5.0">Inſurgent autem fortaſſe <lb/>contrarios, ſi igitur (dicent) pondus <lb/>in E grauius eſt pondere in D, libra <lb/>

<s id="id.2.1.33.3.1.5.0">In&longs;urgent autem forta&longs;&longs;e <lb/>contrarios, &longs;i igitur (dicent) pondus <lb/>in E grauius e&longs;t pondere in D, libra <lb/><figure id="id.036.01.052.1.jpg" xlink:href="036/01/052/1.jpg"></figure><lb/>DE in hoc &longs;itu minimè per&longs;i&longs;tet, quod <expan abbr="equid&etilde;">equidem</expan> tueri propo&longs;uimus: <lb/>&longs;ed in FG mouebitur. </s>

<s id="id.2.1.33.3.1.6.0">quibus re&longs;pondemus, plurimum referre, &longs;iue <lb/>con&longs;ideremus pondera, quatenus &longs;unt inuicem di&longs;iuncta, &longs;iue quate <lb/>nus &longs;unt &longs;ibi inuicem connexa. </s>

<lb/>DE in hoc ſitu minimè perſiſtet, quod <expan abbr="equidẽ">equidem</expan> tueri propoſuimus: <lb/>ſed in FG mouebitur. </s>

<s id="id.2.1.33.3.1.7.0">alia e&longs;t enim ratio ponderis in E &longs;ine <lb/>connexione ponderis in D, alia verò eiu&longs;dem alteri ponderi con<lb/>nexi; ita vt alterum &longs;ine altero moueri non po&longs;sit. </s>

<s id="id.2.1.33.3.1.6.0">quibus reſpondemus, plurimum referre, ſiue <lb/>conſideremus pondera, quatenus ſunt inuicem diſiuncta, ſiue quate <lb/>nus ſunt ſibi inuicem connexa. </s>

<s id="id.2.1.33.3.1.8.0">nam ponde<lb/>ris in E, quatenus e&longs;t &longs;ine alterius ponderis connexione, rectus <lb/>naturalis de&longs;cen&longs;us e&longs;t per lineam ES; quatenus verò connexum <lb/>e&longs;t ponderi in D, eius naturalis de&longs;cen&longs;us non erit amplius per <lb/>lineam ES, &longs;ed per lineam ip&longs;i CS parallelam. </s>

<s id="id.2.1.33.3.1.7.0">alia eſt enim ratio ponderis in E ſine <lb/>connexione ponderis in D, alia verò eiuſdem alteri ponderi con<lb/>nexi; ita vt alterum ſine altero moueri non poſsit. </s>

<s id="id.2.1.33.3.1.9.0">magnitudo enim <lb/>ex ponderibus ED, & libra DE compo&longs;ita, cuius grauitatis cen<lb/>trum e&longs;t C, &longs;i nullibi &longs;u&longs;tineatur, deor&longs;um eo modo, quo reperi<lb/>tur, &longs;ecundùm grauitatis centrum per rectam à centro grauita<lb/>tis C ad centrum mundi S ductam naturaliter mouebitur, donec <pb n="20" xlink:href="036/01/053.jpg"/>centrum C in centrum S perueniat. </s>

<s id="id.2.1.33.3.1.8.0">nam ponde<lb/>ris in E, quatenus eſt ſine alterius ponderis connexione, rectus <lb/>naturalis deſcenſus eſt per lineam ES; quatenus verò connexum <lb/>eſt ponderi in D, eius naturalis deſcenſus non erit amplius per <lb/>lineam ES, ſed per lineam ipſi CS parallelam. </s>

<s id="id.2.1.33.3.1.10.0">libra igitur DE vná cum pon<lb/>deribus eo modo, quo reperitur, deor&longs;um mouebitur, ita vt pun<lb/>ctum C per lineam CS moueatur, donec C in S, libraq; DE in <lb/>Hk perueniat; habeatq; libra in Hk eandem, quam prius habe<lb/>bat po&longs;itionem; hoc e&longs;t Hk &longs;it ip&longs;i DE æquidi&longs;tans. </s>

<s id="id.2.1.33.3.1.9.0">magnitudo enim <lb/>ex ponderibus ED, & libra DE compoſita, cuius grauitatis cen<lb/>trum eſt C, ſi nullibi ſuſtineatur, deorſum eo modo, quo reperi<lb/>tur, ſecundùm grauitatis centrum per rectam à centro grauita<lb/>tis C ad centrum mundi S ductam naturaliter mouebitur, donec <pb n="20" xlink:href="036/01/053.jpg" xlink:type="simple"/>centrum C in centrum S perueniat. </s>

<s id="id.2.1.33.3.1.10.0">libra igitur DE vná cum pon<lb/>deribus eo modo, quo reperitur, deorſum mouebitur, ita vt pun<lb/>ctum C per lineam CS moueatur, donec C in S, libraq; DE in <lb/>Hk perueniat; habeatq; libra in Hk eandem, quam prius habe<lb/>bat poſitionem; hoc eſt Hk ſit ipſi DE æquidiſtans. </s>

<s id="id.2.1.33.3.1.11.0">connectantur <lb/>igitur DH Ek. </s>

<s id="id.2.1.33.3.1.12.0">manifeſtum eſt, dum libra DE in Hk mouetur pun<lb/>cta DE per lineas DH Ek moueri, quippe exiſtentibus inter ſe <arrow.to.target n="note59" xlink:type="simple"/>

<s id="id.2.1.33.3.1.12.0">manife&longs;tum e&longs;t, dum libra DE in Hk mouetur pun<lb/>cta DE per lineas DH Ek moueri, quippe exi&longs;tentibus inter &longs;e <arrow.to.target n="note59"></arrow.to.target><lb/>&longs;e, ip&longs;iq; CS æqualibus, & æquidi&longs;tantibus. </s>

<lb/>ſe, ipſiq; CS æqualibus, & æquidiſtantibus. </s>

<s id="id.2.1.33.3.1.13.0">Quare pondera in <lb/>DE, quatenus &longs;unt &longs;ibi inuicem connexa, &longs;i ip&longs;orum naturalem mo <lb/>tum &longs;pectemus, non &longs;ecundùm lineas DS ES, &longs;ed &longs;ecundùm <lb/>LDH MEk ip&longs;i CS æquidi&longs;tantes mouebuntur. </s>

<s id="id.2.1.33.3.1.13.0">Quare pondera in <lb/>DE, quatenus ſunt ſibi inuicem connexa, ſi ipſorum naturalem mo <lb/>tum ſpectemus, non ſecundùm lineas DS ES, ſed ſecundùm <lb/>LDH MEk ipſi CS æquidiſtantes mouebuntur. </s>

<s id="id.2.1.33.3.1.14.0">ponderis ve<lb/>rò in E liberi, ac &longs;oluti, naturalis propen&longs;io erit per ES: ponderis <lb/>autem in D &longs;imiliter &longs;oluti erit per DS. ac propterea non e&longs;t incon<lb/>ueniens idem pondus modò in E, modò in D, grauius e&longs;&longs;e in E, <lb/>quàm in D. </s>

<s id="id.2.1.33.3.1.14.0">ponderis ve<lb/>rò in E liberi, ac ſoluti, naturalis propenſio erit per ES: ponderis <lb/>autem in D ſimiliter ſoluti erit per DS. ac propterea non eſt incon<lb/>ueniens idem pondus modò in E, modò in D, grauius eſſe in E, <lb/>quàm in D. </s>

<s id="id.2.1.33.3.1.14.0.a">&longs;i verò pondera in ED &longs;ibi inuicem connexa, quate<lb/>nusq; &longs;unt connexa con&longs;iderauerimus; erit ponderis in E natura<lb/>lis propen&longs;io per lineam MEK: grauitas enim alterius ponde<lb/>ris in D efficit, nè pondus in E per lineam ES grauitet, &longs;ed per <lb/>Ek. </s>

<s id="id.2.1.33.3.1.14.0.a">ſi verò pondera in ED ſibi inuicem connexa, quate<lb/>nusq; ſunt connexa conſiderauerimus; erit ponderis in E natura<lb/>lis propenſio per lineam MEK: grauitas enim alterius ponde<lb/>ris in D efficit, nè pondus in E per lineam ES grauitet, ſed per <lb/>Ek. </s>

<s id="id.2.1.33.3.1.15.0">quod ip&longs;um quoq; grauitas ponderis in E efficit, nè &longs;cilicet <lb/>pondus in D per rectam DS degrauet; &longs;ed &longs;ecundùm DH: vtra<lb/>que enim &longs;e impediunt, nè ad propria loca <expan abbr="permeent">permeant</expan>. </s>

<s id="id.2.1.33.3.1.15.0">quod ipſum quoq; grauitas ponderis in E efficit, nè ſcilicet <lb/>pondus in D per rectam DS degrauet; ſed ſecundùm DH: vtra<lb/>que enim ſe impediunt, nè ad propria loca <expan abbr="permeent">permeant</expan>. </s>

<s id="id.2.1.33.3.1.16.0">Cùm igi<lb/>tur naturalis de&longs;cen&longs;us rectus ponderum in DE &longs;it &longs;ecundùm <lb/>LDH MEK: erit <expan abbr="&longs;imliter">similiter</expan> rectus eorum a&longs;cen&longs;us &longs;ecundùm ea&longs;<lb/>dem lineas HDL KEM. atq; a&longs;cen&longs;us ponderis in E magis, mi<lb/>nu&longs;uè obliquus dicetur; quantò &longs;ecundùm &longs;patium magis, mi<lb/>nu&longs;uè iuxta lineam Mk mouebitur. </s>

<s id="id.2.1.33.3.1.16.0">Cùm igi<lb/>tur naturalis deſcenſus rectus ponderum in DE ſit ſecundùm <lb/>LDH MEK: erit <expan abbr="ſimliter">similiter</expan> rectus eorum aſcenſus ſecundùm eaſ<lb/>dem lineas HDL KEM. atq; aſcenſus ponderis in E magis, mi<lb/>nuſuè obliquus dicetur; quantò ſecundùm ſpatium magis, mi<lb/>nuſuè iuxta lineam Mk mouebitur. </s>

<s id="id.2.1.33.3.1.17.0">hocq; pror&longs;us modo iuxta li<lb/>neam LH &longs;ummendus e&longs;t, tùm de&longs;cen&longs;us, tùm a&longs;cen&longs;us ponde<lb/>ris in D. </s>

<s id="id.2.1.33.3.1.17.0">hocq; prorſus modo iuxta li<lb/>neam LH ſummendus eſt, tùm deſcenſus, tùm aſcenſus ponde<lb/>ris in D. </s>

<s>&longs;i itaq; pondus in E deor&longs;um per EG moueretur; pon<lb/>dus in D &longs;ur&longs;um per DF moueret. </s>

<s id="N117E3">ſi itaq; pondus in E deorſum per EG moueretur; pon<lb/>dus in D ſurſum per DF moueret. </s>

<s id="id.2.1.33.3.1.18.0">& quoniam angulus CEK <arrow.to.target n="note60"></arrow.to.target><lb/>æqualis e&longs;t angulo CDL, & angulus CEG angulo CDF æqua<lb/>lis; erit reliquus GEK reliquo LDF æqualis. </s>

<s id="id.2.1.33.3.1.18.0">& quoniam angulus CEK <arrow.to.target n="note60" xlink:type="simple"/>

<s id="id.2.1.33.3.1.19.0">cùm autem &longs;up<lb/>po&longs;itio illa, quæ ait, &longs;ecundúm &longs;itum pondus grauius e&longs;&longs;e, quan<lb/>tò in eodem &longs;itu minus obliquus e&longs;t de&longs;cen&longs;us; tanquam clara, <lb/>atq; con&longs;picua admittatur; proculdubio hæc quoq; accipienda <lb/>erit; nempè, &longs;ecundúm &longs;itum pondus grauius e&longs;&longs;e, quantò in eo<lb/>dem &longs;itu minus obliquus e&longs;t a&longs;cen&longs;us. </s>

<lb/>æqualis eſt angulo CDL, & angulus CEG angulo CDF æqua<lb/>lis; erit reliquus GEK reliquo LDF æqualis. </s>

<s id="id.2.1.33.3.1.20.0">cùm non minus manife&longs;ta, <pb xlink:href="036/01/054.jpg"/>rationiq; &longs;it con&longs;entanea. </s>

<s id="id.2.1.33.3.1.19.0">cùm autem ſup<lb/>poſitio illa, quæ ait, ſecundúm ſitum pondus grauius eſſe, quan<lb/>tò in eodem ſitu minus obliquus eſt deſcenſus; tanquam clara, <lb/>atq; conſpicua admittatur; proculdubio hæc quoq; accipienda <lb/>erit; nempè, ſecundúm ſitum pondus grauius eſſe, quantò in eo<lb/>dem ſitu minus obliquus eſt aſcenſus. </s>

<s id="id.2.1.33.3.1.21.0">æqualis <lb/>igitur erit de&longs;cen&longs;us ponderis in E <lb/>a&longs;cen&longs;ui ponderis in D. </s>

<s id="id.2.1.33.3.1.20.0">cùm non minus manifeſta, <pb xlink:href="036/01/054.jpg" xlink:type="simple"/>rationiq; ſit conſentanea. </s>

<s>eandem <lb/>enim obliquitatem habet de&longs;cen&longs;us <lb/>ponderis in E, quam habet a&longs;cen<lb/>&longs;us ponderis in D; & qualis erit <lb/>propen&longs;io vnius ad motum deor&longs;um, <lb/>talis quoq; erit re&longs;i&longs;tentia alterius ad <lb/>motum &longs;ur&longs;um. </s>

<s id="id.2.1.33.3.1.21.0">æqualis <lb/>igitur erit deſcenſus ponderis in E <lb/>aſcenſui ponderis in D. </s>

<s id="id.2.1.33.3.1.22.0"><expan abbr="nõ">non</expan> ergo pondus in E <lb/>pondus in D &longs;ur&longs;um mouebit. </s>

<s id="N1180C">eandem <lb/>enim obliquitatem habet deſcenſus <lb/>ponderis in E, quam habet aſcen<lb/>ſus ponderis in D; & qualis erit <lb/>propenſio vnius ad motum deorſum, <lb/>talis quoq; erit reſiſtentia alterius ad <lb/>motum ſurſum. </s>

<s id="id.2.1.33.3.1.23.0">neq; <lb/>pondus in D deor&longs;um mouebitur, ita <lb/>vt &longs;ur&longs;um moueat pondus in E. nam <lb/><expan abbr="c&utilde;">cum</expan> angulus CEB &longs;it ip&longs;i CDA æqua<lb/><arrow.to.target n="note61"></arrow.to.target>lis, & Angulus CEM &longs;it angulo <lb/>CDH æqualis; erit reliquus MEB <lb/>reliquo HDA æqualis. </s>

<s id="id.2.1.33.3.1.24.0">de&longs;cen&longs;us <lb/>igitur ponderis in D a&longs;cen&longs;ui ponde<lb/>ris in E æqualis erit. </s>

<expan abbr="nõ">non</expan> ergo pondus in E <lb/>pondus in D ſurſum mouebit. </s>

<s id="id.2.1.33.3.1.25.0">non ergo pon<lb/>dus in D pondus in E &longs;ur&longs;um moue<lb/>bit. </s>

<s id="id.2.1.33.3.1.23.0">neq; <lb/>pondus in D deorſum mouebitur, ita <lb/>vt ſurſum moueat pondus in E. nam <lb/>

<s id="id.2.1.33.3.1.26.0">ex quibus &longs;equitur pondera in <lb/>DE, quatenus &longs;unt &longs;ibi inuicem con<lb/>nexa, æquè grauia e&longs;&longs;e. <figure id="id.036.01.054.1.jpg" xlink:href="036/01/054/1.jpg"></figure></s>

<expan abbr="cũ">cum</expan> angulus CEB ſit ipſi CDA æqua<lb/>

<arrow.to.target n="note61" xlink:type="simple"/>lis, & Angulus CEM ſit angulo <lb/>CDH æqualis; erit reliquus MEB <lb/>reliquo HDA æqualis. </s>

<s id="id.2.1.33.3.1.24.0">deſcenſus <lb/>igitur ponderis in D aſcenſui ponde<lb/>ris in E æqualis erit. </s>

<s id="id.2.1.33.3.1.25.0">non ergo pon<lb/>dus in D pondus in E ſurſum moue<lb/>bit. </s>

<s id="id.2.1.33.3.1.26.0">ex quibus ſequitur pondera in <lb/>DE, quatenus ſunt ſibi inuicem con<lb/>nexa, æquè grauia eſſe. <figure id="id.036.01.054.1.jpg" place="text" xlink:href="036/01/054/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.33.4.1.1.0">Alia deinde ratio, li<lb/>bram ſimiliter DE in AB <lb/>redire oſtendens, cùm in<lb/>quiunt, exiſtente trutina in <lb/>CF meta eſt CG. </s>

<s id="id.2.1.33.4.1.1.0">Alia deinde ratio, li<lb/>bram &longs;imiliter DE in AB <lb/>redire o&longs;tendens, cùm in<lb/>quiunt, exi&longs;tente trutina in <lb/>CF meta e&longs;t CG. </s>

<s id="id.2.1.33.4.1.1.0.a">& quo<lb/>niam angulus DCG maior <lb/>eſt angulo ECG; pondus <lb/>in D grauius erit pondere <lb/>in E; ergo libra DE in AB <lb/>redibit: nihil meo iudicio <lb/>concludit. </s>

<s id="id.2.1.33.4.1.1.0.a">& quo<lb/>niam angulus DCG maior <lb/>e&longs;t angulo ECG; pondus <lb/>in D grauius erit pondere <lb/>in E; ergo libra DE in AB <lb/>redibit: nihil meo iudicio <lb/>concludit. </s>

<s id="id.2.1.33.4.1.2.0">figmentumq; <lb/>hoc de trutina, & meta po<lb/>tius omittendum, ac ſilen<figure id="id.036.01.054.2.jpg" place="text" xlink:href="036/01/054/2.jpg" xlink:type="simple"/>

<s id="id.2.1.33.4.1.2.0">figmentumq; <lb/>hoc de trutina, & meta po<lb/>tius omittendum, ac &longs;ilen<figure id="id.036.01.054.2.jpg" xlink:href="036/01/054/2.jpg"></figure><pb n="21" xlink:href="036/01/055.jpg"/>tio <expan abbr="prætereund&utilde;">prætereundum</expan> e&longs;&longs;et, quàm <expan abbr="verb&utilde;">verbum</expan> <expan abbr="vll&utilde;">vllum</expan> in eius confutatione &longs;umen<lb/>dum; cùm &longs;it pror&longs;us voluntarium. </s>

<pb n="21" xlink:href="036/01/055.jpg" xlink:type="simple"/>tio <expan abbr="prætereundũ">prætereundum</expan> eſſet, quàm <expan abbr="verbũ">verbum</expan>

<s id="id.2.1.33.4.1.3.0">nece&longs;sitas enim cur pondus <lb/>in D ex maiore angulo &longs;it grauius; curq; maior angulus maioris <lb/>&longs;it cau&longs;a grauitatis; nu&longs;quam apparet. </s>

<expan abbr="vllũ">vllum</expan> in eius confutatione ſumen<lb/>dum; cùm ſit prorſus voluntarium. </s>

<s id="id.2.1.33.4.1.4.0">&longs;i autem comparentur in<lb/>uicem anguli, cùm angulus GCD &longs;it æqualis angulo FCE; &longs;i angu<lb/>lus GCD e&longs;t cau&longs;a grauitatis; quare angulus FCE &longs;imiliter gra<lb/>uitatis non e&longs;t cau&longs;a? </s>

<s id="id.2.1.33.4.1.3.0">neceſsitas enim cur pondus <lb/>in D ex maiore angulo ſit grauius; curq; maior angulus maioris <lb/>ſit cauſa grauitatis; nuſquam apparet. </s>

<s id="id.2.1.33.4.1.5.0">Huius autem rei eam in medium rationem <lb/>afferre videntur, quoniam CG e&longs;t meta, & CF trutina. </s>

<s id="id.2.1.33.4.1.4.0">ſi autem comparentur in<lb/>uicem anguli, cùm angulus GCD ſit æqualis angulo FCE; ſi angu<lb/>lus GCD eſt cauſa grauitatis; quare angulus FCE ſimiliter gra<lb/>uitatis non eſt cauſa? </s>

<s id="id.2.1.33.4.1.6.0">&longs;i (inquiunt) <lb/>CG e&longs;&longs;et trutina, & CF meta, tunc angulus FCE grauitatis e&longs;&longs;et <lb/>cau&longs;a; non autem DCG ip&longs;i æqualis. </s>

<s id="id.2.1.33.4.1.5.0">Huius autem rei eam in medium rationem <lb/>afferre videntur, quoniam CG eſt meta, & CF trutina. </s>

<s id="id.2.1.33.4.1.7.0">quæ quidem ratio imma<lb/>ginaria pror&longs;us, ac voluntaria e&longs;&longs;e videtur. </s>

<s id="id.2.1.33.4.1.6.0">ſi (inquiunt) <lb/>CG eſſet trutina, & CF meta, tunc angulus FCE grauitatis eſſet <lb/>cauſa; non autem DCG ipſi æqualis. </s>

<s id="id.2.1.33.4.1.8.0">quid enim refert, &longs;iue tru<lb/>tina &longs;it in CF, &longs;iue in CG, cùm libra DE in eodem &longs;emper pun<lb/>cto C &longs;u&longs;tineatur? </s>

<s id="id.2.1.33.4.1.7.0">quæ quidem ratio imma<lb/>ginaria prorſus, ac voluntaria eſſe videtur. </s>

<s id="id.2.1.33.4.1.9.0">Vt autem eorum deceptio clarius appa<lb/>reat. </s>

<s id="id.2.1.33.4.1.8.0">quid enim refert, ſiue tru<lb/>tina ſit in CF, ſiue in CG, cùm libra DE in eodem ſemper pun<lb/>cto C ſuſtineatur? </s>

<s id="id.2.1.33.4.1.9.0">Vt autem eorum deceptio clarius appa<lb/>reat. </s>

<margin.target id="note59"/>33 <emph type="italics"/>Prmi.<emph.end type="italics"/>

<s id="id.2.1.34.1.1.2.0"><margin.target id="note60"></margin.target>29 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.34.1.1.3.0"><margin.target id="note61"></margin.target>29 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note60"/>29 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<margin.target id="note61"/>29 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.35.1.1.1.0">Sit eadem libra AB, cu<lb/>ius medium C. ſit deinde <lb/>tota FG trutina. </s>

<s id="id.2.1.35.1.1.1.0">Sit eadem libra AB, cu<lb/>ius medium C. &longs;it deinde <lb/>tota FG trutina. </s>

<s id="id.2.1.35.1.1.2.0">eaq; im<lb/>mobilis exiſtat; quæ libram <lb/>AB in puncto C ſuſtineat. </s>

<s id="id.2.1.35.1.1.2.0">eaq; im<lb/>mobilis exi&longs;tat; quæ libram <lb/>AB in puncto C &longs;u&longs;tineat. </s>

<s id="id.2.1.35.1.1.3.0"><lb/>moueaturq; libra in DE. </s>

<lb/>moueaturq; libra in DE. </s>

<s>& <lb/>quoniam trutina e&longs;t, & &longs;u<lb/>pra, & infra libram, quis <lb/>nam angulus erit cau&longs;a gra<lb/>uitatis, cùm libra DE in <lb/><figure id="id.036.01.055.1.jpg" xlink:href="036/01/055/1.jpg"></figure><expan abbr="eod&etilde;"><lb/>eodem</expan> &longs;emper puncto &longs;u&longs;tineatur? </s>

<s id="N118F0">& <lb/>quoniam trutina eſt, & ſu<lb/>pra, & infra libram, quis <lb/>nam angulus erit cauſa gra<lb/>uitatis, cùm libra DE in <lb/>

<s id="id.2.1.35.1.1.4.0">dicent for&longs;an, &longs;i trutina à potentia <lb/>in F &longs;u&longs;titeneatur, tunc CG erit tanquam meta, & angulus <lb/>DCG grauitatis erit cau&longs;a. </s>

<s id="id.2.1.35.1.1.5.0">&longs;i verò &longs;u&longs;tineatur in G, tunc FCE <lb/>erit cau&longs;a grauitatis, CF verò tanquam meta erit. </s>

<s id="id.2.1.35.1.1.6.0">cuius quidem <lb/>rei nulla videtur e&longs;&longs;e cau&longs;a, ni&longs;i immaginaria. </s>

<lb/>eodem</expan> ſemper puncto ſuſtineatur? </s>

<s id="id.2.1.35.1.1.7.0">meta enim (quod <lb/>aiunt) nullam pror&longs;us vim attractiuam, quandoq; ex maioris an<lb/>guli parte, quandoq; ex parte minoris habere videtur. </s>

<s id="id.2.1.35.1.1.4.0">dicent forſan, ſi trutina à potentia <lb/>in F ſuſtiteneatur, tunc CG erit tanquam meta, & angulus <lb/>DCG grauitatis erit cauſa. </s>

<s id="id.2.1.35.1.1.8.0">Verùm à dua<lb/>bus potentiis &longs;u&longs;tineatur trutina, in F &longs;cilicet, & in G, quod præ ne<lb/>ce&longs;sitate fieri pote&longs;t, veluti &longs;i potentia in F &longs;it adeò debilis, vt ex &longs;e <lb/>ip&longs;a medietatem tantùm ponderis &longs;u&longs;tinere quæat: &longs;itq; potentia in <lb/>G ip&longs;i potentiæ in F æqualis, vtræq; <expan abbr="aut&etilde;">autem</expan> &longs;imul libram vná cum pon<lb/>deribus &longs;u&longs;tineant. </s>

<s id="id.2.1.35.1.1.5.0">ſi verò ſuſtineatur in G, tunc FCE <lb/>erit cauſa grauitatis, CF verò tanquam meta erit. </s>

<s id="id.2.1.35.1.1.9.0">tunc quis nam angulus erit cau&longs;a grauitatis? </s>

<s id="id.2.1.35.1.1.6.0">cuius quidem <lb/>rei nulla videtur eſſe cauſa, niſi immaginaria. </s>

<s id="id.2.1.35.1.1.10.0">non <pb xlink:href="036/01/056.jpg"/>FCE, quia trutina e&longs;t in <lb/>CF, & in F &longs;u&longs;tinetur. </s>

<s id="id.2.1.35.1.1.7.0">meta enim (quod <lb/>aiunt) nullam prorſus vim attractiuam, quandoq; ex maioris an<lb/>guli parte, quandoq; ex parte minoris habere videtur. </s>

<s id="id.2.1.35.1.1.11.0">neq; <lb/>DCG, cùm trutina &longs;it in <lb/>CG, & in G quoq; &longs;u&longs;ti<lb/>neatur; non igitur anguli <lb/>grauitatis cau&longs;a erunt. </s>

<s id="id.2.1.35.1.1.8.0">Verùm à dua<lb/>bus potentiis ſuſtineatur trutina, in F ſcilicet, & in G, quod præ ne<lb/>ceſsitate fieri poteſt, veluti ſi potentia in F ſit adeò debilis, vt ex ſe <lb/>ipſa medietatem tantùm ponderis ſuſtinere quæat: ſitq; potentia in <lb/>G ipſi potentiæ in F æqualis, vtræq; <expan abbr="autẽ">autem</expan> ſimul libram vná cum pon<lb/>deribus ſuſtineant. </s>

<s id="id.2.1.35.1.1.12.0">ergo <lb/>neq; libra DE ab hoc &longs;itu <lb/>ob hanc cau&longs;am mouebi<lb/><arrow.to.target n="note62"></arrow.to.target>tur. </s>

<s id="id.2.1.35.1.1.9.0">tunc quis nam angulus erit cauſa grauitatis? </s>

<s id="id.2.1.35.1.1.13.0">Hanc autem eorum <lb/>&longs;ententiam dupliciter con<lb/><figure id="id.036.01.056.1.jpg" xlink:href="036/01/056/1.jpg"></figure><lb/>firmare videntur. </s>

<s id="id.2.1.35.1.1.10.0">non <pb xlink:href="036/01/056.jpg" xlink:type="simple"/>FCE, quia trutina eſt in <lb/>CF, & in F ſuſtinetur. </s>

<s id="id.2.1.35.1.1.14.0">primùm quidem a&longs;&longs;erunt Ari&longs;totelem in quæ&longs;tio<lb/>nibus mechanicis has duas tantùm quæ&longs;tiones propo&longs;ui&longs;&longs;e; eiu&longs;q; <lb/>demon&longs;trationes, tum maiori, & minori angulo, tùm trutinæ po&longs;i<lb/>tioni inniti. </s>

<s id="id.2.1.35.1.1.11.0">neq; <lb/>DCG, cùm trutina ſit in <lb/>CG, & in G quoq; ſuſti<lb/>neatur; non igitur anguli <lb/>grauitatis cauſa erunt. </s>

<s id="id.2.1.35.1.1.15.0">Affirmant deinde experientiam hoc idem docere; <lb/>hoc e&longs;t libram DE trutina exi&longs;tente in CF, in AB horizonti <lb/>æquidi&longs;tantem redire. </s>

<s id="id.2.1.35.1.1.12.0">ergo <lb/>neq; libra DE ab hoc ſitu <lb/>ob hanc cauſam mouebi<lb/>

<s id="id.2.1.35.1.1.16.0">quando autem trutina e&longs;t in CG, in FG <lb/>moueri. </s>

<arrow.to.target n="note62" xlink:type="simple"/>tur. </s>

<s id="id.2.1.35.1.1.17.0">Verùm neq; Ari&longs;toteles, neq; experientia huic eorum <lb/>opinioni fauent, quin potius aduer&longs;antur. </s>

<s id="id.2.1.35.1.1.13.0">Hanc autem eorum <lb/>ſententiam dupliciter con<lb/>

<s id="id.2.1.35.1.1.18.0">quantùm enim atti<lb/>net ad experientiam decipiuntur, ip&longs;a quidem experientia ma<lb/>nife&longs;tum e&longs;t hoc accidere, quando libræ quoq; centrum, vel &longs;u<lb/>pra, vel infra libram fuerit collocatum: non autem trutina dun<lb/>taxat &longs;upra, vel infra exi&longs;tente, id contingere. </s>

<lb/>firmare videntur. </s>

<s id="id.2.1.35.1.1.14.0">primùm quidem aſſerunt Ariſtotelem in quæſtio<lb/>nibus mechanicis has duas tantùm quæſtiones propoſuiſſe; eiuſq; <lb/>demonſtrationes, tum maiori, & minori angulo, tùm trutinæ poſi<lb/>tioni inniti. </s>

<s id="id.2.1.35.1.1.15.0">Affirmant deinde experientiam hoc idem docere; <lb/>hoc eſt libram DE trutina exiſtente in CF, in AB horizonti <lb/>æquidiſtantem redire. </s>

<s id="id.2.1.35.1.1.16.0">quando autem trutina eſt in CG, in FG <lb/>moueri. </s>

<s id="id.2.1.35.1.1.17.0">Verùm neq; Ariſtoteles, neq; experientia huic eorum <lb/>opinioni fauent, quin potius aduerſantur. </s>

<s id="id.2.1.35.1.1.18.0">quantùm enim atti<lb/>net ad experientiam decipiuntur, ipſa quidem experientia ma<lb/>nifeſtum eſt hoc accidere, quando libræ quoq; centrum, vel ſu<lb/>pra, vel infra libram fuerit collocatum: non autem trutina dun<lb/>taxat ſupra, vel infra exiſtente, id contingere. </s>

<s id="id.2.1.36.1.1.1.0"><margin.target id="note62"></margin.target><emph type="italics"/>Cardanus.<emph.end type="italics"/></s>

<margin.target id="note62"/>

<emph type="italics"/>Cardanus.<emph.end type="italics"/>

</s>

<s id="id.2.1.37.1.2.1.0">Nam ſi libra AB habeat <lb/>centrum C ſupra libram; <lb/>ſitq; trutina CD infra li<lb/>bram; moueaturq; libra in <lb/>EF; tunc EF rurſus in AB <lb/>horizonti æquidiſtantem <arrow.to.target n="note63" xlink:type="simple"/>

<s id="id.2.1.37.1.2.1.0">Nam &longs;i libra AB habeat <lb/>centrum C &longs;upra libram; <lb/>&longs;itq; trutina CD infra li<lb/>bram; moueaturq; libra in <lb/>EF; tunc EF rur&longs;us in AB <lb/>horizonti æquidi&longs;tantem <arrow.to.target n="note63"></arrow.to.target><lb/>redibit. </s>

<lb/>redibit. </s>

<s id="id.2.1.37.1.2.2.0">&longs;imiliter &longs;i libra <lb/>centrum C habeat infra li<lb/>bram, &longs;itq; trutina CD &longs;u<lb/>pra libram, & moueatur <lb/>libra in EF; patet libram <arrow.to.target n="note64"></arrow.to.target><lb/>ex parte F deor&longs;um moue <lb/>ri, trutina &longs;upra libram e<lb/>xi&longs;tente. </s>

<s id="id.2.1.37.1.2.2.0">ſimiliter ſi libra <lb/>centrum C habeat infra li<lb/>bram, ſitq; trutina CD ſu<lb/>pra libram, & moueatur <lb/>libra in EF; patet libram <arrow.to.target n="note64" xlink:type="simple"/>

<s id="id.2.1.37.1.2.3.0">& in quocunq; a<lb/>lio &longs;itu fuerit trutina, idem <lb/>&longs;emper eueniet. </s>

<lb/>ex parte F deorſum moue <lb/>ri, trutina ſupra libram e<lb/>xiſtente. </s>

<s id="id.2.1.37.1.2.4.0">non igitur <lb/>trutina, &longs;ed centrum libræ <lb/>harum diuer&longs;itatum cau<lb/>&longs;a erit. <figure id="id.036.01.057.1.jpg" xlink:href="036/01/057/1.jpg"></figure></s>

<s id="id.2.1.37.1.2.3.0">& in quocunq; a<lb/>lio ſitu fuerit trutina, idem <lb/>ſemper eueniet. </s>

<s id="id.2.1.37.1.2.4.0">non igitur <lb/>trutina, ſed centrum libræ <lb/>harum diuerſitatum cau<lb/>ſa erit. <figure id="id.036.01.057.1.jpg" place="text" xlink:href="036/01/057/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.37.2.1.1.0">Animaduertendum eſt <lb/>itaq; in hac parte difficulter materialem libram conſtitui poſſe, <lb/>quæ in vno tantùm puncto ſuſtineatur; quemadmodum mente <lb/>concipimus. </s>

<s id="id.2.1.37.2.1.1.0">Animaduertendum e&longs;t <lb/>itaq; in hac parte difficulter materialem libram con&longs;titui po&longs;&longs;e, <lb/>quæ in vno tantùm puncto &longs;u&longs;tineatur; quemadmodum mente <lb/>concipimus. </s>

<s id="id.2.1.37.2.1.2.0">brachiaq; ab eiuſmodi centro adeò æqualia habeat, <lb/>non ſolum in longitudine, verùm etiam in latitudine, & profun<lb/>ditate, vt omnes partes hinc indé ad vnguem æqueponderent. </s>

<s id="id.2.1.37.2.1.2.0">brachiaq; ab eiu&longs;modi centro adeò æqualia habeat, <lb/>non &longs;olum in longitudine, verùm etiam in latitudine, & profun<lb/>ditate, vt omnes partes hinc indé ad vnguem æqueponderent. </s>

<s id="id.2.1.37.2.1.3.0"><lb/>hoc enim materia difficilimè patitur. </s>

<lb/>hoc enim materia difficilimè patitur. </s>

<s id="id.2.1.37.2.1.4.0">quocirca &longs;i centrum in ip&longs;a <lb/>libra e&longs;&longs;e con&longs;iderauerimus, ad &longs;en&longs;um confugiendum non e&longs;t: <lb/>cùm artificilia ad &longs;ummum illud perfectionis gradum ab artifice <lb/>deduci minimè po&longs;sint. </s>

<s id="id.2.1.37.2.1.4.0">quocirca ſi centrum in ipſa <lb/>libra eſſe conſiderauerimus, ad ſenſum confugiendum non eſt: <lb/>cùm artificilia ad ſummum illud perfectionis gradum ab artifice <lb/>deduci minimè poſsint. </s>

<s id="id.2.1.37.2.1.5.0">In aliis verò experientia quidem appa<lb/>rentia docere poterit; propterea quod, quamquam centrum libræ <lb/>&longs;it &longs;emper punctum, quando tamen &longs;upra libram fuerit, parùm re<lb/>fert, &longs;i libra in eo puncto adamu&longs;&longs;im minimè &longs;u&longs;tineatur; quia cùm <lb/>&longs;it &longs;emper &longs;upra libram, idem &longs;emper eueniet. </s>

<s id="id.2.1.37.2.1.5.0">In aliis verò experientia quidem appa<lb/>rentia docere poterit; propterea quod, quamquam centrum libræ <lb/>ſit ſemper punctum, quando tamen ſupra libram fuerit, parùm re<lb/>fert, ſi libra in eo puncto adamuſſim minimè ſuſtineatur; quia cùm <lb/>ſit ſemper ſupra libram, idem ſemper eueniet. </s>

<s id="id.2.1.37.2.1.6.0">&longs;imili quoq; modo <lb/>quando e&longs;t infra libram: quod tamen non accidit centro in ip&longs;a li<lb/>bra exi&longs;tente. </s>

<s id="id.2.1.37.2.1.6.0">ſimili quoq; modo <lb/>quando eſt infra libram: quod tamen non accidit centro in ipſa li<lb/>bra exiſtente. </s>

<s id="id.2.1.37.2.1.7.0">&longs;i enim ad vnguem &longs;emper in illo medio non &longs;u<lb/>&longs;tineatur, diuer&longs;itatem efficiet; cùm facillimum &longs;it, centrum il<pb xlink:href="036/01/058.jpg"/>lud, dùm libra mouetur, proprium mutare &longs;itum. </s>

<s id="id.2.1.37.2.1.7.0">ſi enim ad vnguem ſemper in illo medio non ſu<lb/>ſtineatur, diuerſitatem efficiet; cùm facillimum ſit, centrum il<pb xlink:href="036/01/058.jpg" xlink:type="simple"/>lud, dùm libra mouetur, proprium mutare ſitum. </s>

<s id="id.2.1.38.1.1.1.0"><margin.target id="note63"></margin.target>2 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

<margin.target id="note63"/>2 <emph type="italics"/>Huius.<emph.end type="italics"/>

<s id="id.2.1.38.1.1.2.0"><margin.target id="note64"></margin.target>3 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

</s>

<margin.target id="note64"/>3 <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.39.1.1.1.0">Quòd autem Ariſtoteles duas tantùm quæſtiones propo<lb/>ſuerit, cur ſcilicet trutina ſuperius exiſtente, ſi libra non ſit <lb/>horizonti æquidiſtans in æquilibrium, hoc eſt horizonti æqui <lb/>diſtans redit: ſi autem trutina deorſum fuerit conſtituta, non <lb/>redit; ſed adhuc ſecundùm partem depreſſam mouetur: verum <lb/>quidem eſt. </s>

<s id="id.2.1.39.1.1.1.0">Quòd autem Ari&longs;toteles duas tantùm quæ&longs;tiones propo<lb/>&longs;uerit, cur &longs;cilicet trutina &longs;uperius exi&longs;tente, &longs;i libra non &longs;it <lb/>horizonti æquidi&longs;tans in æquilibrium, hoc e&longs;t horizonti æqui <lb/>di&longs;tans redit: &longs;i autem trutina deor&longs;um fuerit con&longs;tituta, non <lb/>redit; &longs;ed adhuc &longs;ecundùm partem depre&longs;&longs;am mouetur: verum <lb/>quidem e&longs;t. </s>

<s id="id.2.1.39.1.1.2.0">non tamen eius demonſtrationes maiori, & mino <lb/>ri angulo, poſitioniqué trutinæ (vt ipſi dicunt) innituntur. </s>

<s id="id.2.1.39.1.1.2.0">non tamen eius demon&longs;trationes maiori, & mino <lb/>ri angulo, po&longs;itioniqué trutinæ (vt ip&longs;i dicunt) innituntur. </s>

<s id="id.2.1.39.1.1.3.0">In <lb/>hoc enim mentem philoſophi aſignantis rationem diuerſitatis <lb/>motuum libræ minimè attingunt. </s>

<s id="id.2.1.39.1.1.3.0">In <lb/>hoc enim mentem philo&longs;ophi a&longs;ignantis rationem diuer&longs;itatis <lb/>motuum libræ minimè attingunt. </s>

<s id="id.2.1.39.1.1.4.0">tantùm enim abeſt philoſo<lb/>phum has diuerſitates in angulos referre, vt potius in cauſa eſſe <lb/>dicat magnitudinis alterius brachii libræ exceſſum à perpendiculo, <lb/>modò ex vna, modò ex altera parte contingentem. </s>

<s id="id.2.1.39.1.1.4.0">tantùm enim abe&longs;t philo&longs;o<lb/>phum has diuer&longs;itates in angulos referre, vt potius in cau&longs;a e&longs;&longs;e <lb/>dicat magnitudinis alterius brachii libræ exce&longs;&longs;um à perpendiculo, <lb/>modò ex vna, modò ex altera parte contingentem. </s>

<s id="id.2.1.39.2.1.1.0">Vt trutina ſuperius in <lb/>CF exiſtente, perpendicu<lb/>lum erit FCG, quod ſe<lb/>cundùm ipſum in centrum <lb/>mundi ſemper vergit; <lb/>quod quidem libram mo<lb/>tam in DE in partes di<lb/>uidit inæquales; & maior <lb/>pars eſt verſus D: id au<lb/>tem, quod plus eſt, deor<lb/>ſum fertur; ergo ex par<lb/>te D deorſum libra moue<lb/>bitur, donec in AB re<lb/>deat. </s>

<s id="id.2.1.39.2.1.1.0">Vt trutina &longs;uperius in <lb/>CF exi&longs;tente, perpendicu<lb/>lum erit FCG, quod &longs;e<lb/>cundùm ip&longs;um in centrum <lb/>mundi &longs;emper vergit; <lb/>quod quidem libram mo<lb/>tam in DE in partes di<lb/>uidit inæquales; & maior <lb/>pars e&longs;t ver&longs;us D: id au<lb/>tem, quod plus e&longs;t, deor<lb/>&longs;um fertur; ergo ex par<lb/>te D deor&longs;um libra moue<lb/>bitur, donec in AB re<lb/>deat. </s>

<s id="id.2.1.39.2.1.2.0">ſi verò trutina ſit <lb/>

<s id="id.2.1.39.2.1.2.0">&longs;i verò trutina &longs;it <lb/><figure id="id.036.01.058.1.jpg" xlink:href="036/01/058/1.jpg"></figure><lb/>in CG deor&longs;um, erit GCF perpendiculum, quod libram DE <lb/>in partes inæquales &longs;imiliter diuidit: maior autem pars erit ver&longs;us <lb/>E; quare ex parte E deor&longs;um libra mouebitur. </s>

<s id="id.2.1.39.2.1.3.0">quod vt rectè in<lb/>telligatur, cùm trutina e&longs;t &longs;upra libram, libræ quoq; centrum &longs;u<lb/>pra libram e&longs;&longs;e intelligendum e&longs;t; & &longs;i deor&longs;um, centrum quoque <lb/>deor&longs;um: vt infra patebit. </s>

<lb/>in CG deorſum, erit GCF perpendiculum, quod libram DE <lb/>in partes inæquales ſimiliter diuidit: maior autem pars erit verſus <lb/>E; quare ex parte E deorſum libra mouebitur. </s>

<s id="id.2.1.39.2.1.4.0">Aliter ip&longs;a Ari&longs;totelis demon&longs;tratio <lb/>nihil concluderet. </s>

<s id="id.2.1.39.2.1.3.0">quod vt rectè in<lb/>telligatur, cùm trutina eſt ſupra libram, libræ quoq; centrum ſu<lb/>pra libram eſſe intelligendum eſt; & ſi deorſum, centrum quoque <lb/>deorſum: vt infra patebit. </s>

<s id="id.2.1.39.2.1.5.0">exi&longs;tente enim centro in ip&longs;a libra, vt in C; quo<lb/>cunq; modo moueatur libra, nunquam perpendiculum FG libram, <pb n="23" xlink:href="036/01/059.jpg"/>ni&longs;i in puncto C, & in partes diuidet æquales. </s>

<s id="id.2.1.39.2.1.4.0">Aliter ipſa Ariſtotelis demonſtratio <lb/>nihil concluderet. </s>

<s id="id.2.1.39.2.1.6.0">quare Ari&longs;totelis <lb/>&longs;ententia ip&longs;is non &longs;olum non fauet, verùm etiam maximè aduer<lb/>&longs;atur. </s>

<s id="id.2.1.39.2.1.5.0">exiſtente enim centro in ipſa libra, vt in C; quo<lb/>cunq; modo moueatur libra, nunquam perpendiculum FG libram, <pb n="23" xlink:href="036/01/059.jpg" xlink:type="simple"/>niſi in puncto C, & in partes diuidet æquales. </s>

<s id="id.2.1.39.2.1.7.0">quòd non &longs;olum ex &longs;ecunda, & tertia huius liquet; verùm <lb/>quia exi&longs;tente centro &longs;upra libram pondus eleuatum maiorem <lb/>propter &longs;itum acquirit grauitatem. </s>

<s id="id.2.1.39.2.1.6.0">quare Ariſtotelis <lb/>ſententia ipſis non ſolum non fauet, verùm etiam maximè aduer<lb/>ſatur. </s>

<s id="id.2.1.39.2.1.8.0">ex quò contingit redditus li<lb/>bræ ad æqualem horizonti di&longs;tantiam. </s>

<s id="id.2.1.39.2.1.7.0">quòd non ſolum ex ſecunda, & tertia huius liquet; verùm <lb/>quia exiſtente centro ſupra libram pondus eleuatum maiorem <lb/>propter ſitum acquirit grauitatem. </s>

<s id="id.2.1.39.2.1.9.0">è contra verò, quando <lb/>centrum e&longs;t infra libram. </s>

<s id="id.2.1.39.2.1.8.0">ex quò contingit redditus li<lb/>bræ ad æqualem horizonti diſtantiam. </s>

<s id="id.2.1.39.2.1.10.0">Quæ omnia hoc modo o&longs;tendentur; <lb/>&longs;upponendo ea, quæ &longs;upra declarata &longs;unt. </s>

<s id="id.2.1.39.2.1.9.0">è contra verò, quando <lb/>centrum eſt infra libram. </s>

<s id="id.2.1.39.2.1.11.0">&longs;cilicet pondus ex quò <lb/>loco rectius de&longs;cendit, grauius fieri. </s>

<s id="id.2.1.39.2.1.10.0">Quæ omnia hoc modo oſtendentur; <lb/>ſupponendo ea, quæ ſupra declarata ſunt. </s>

<s id="id.2.1.39.2.1.12.0">& ex quo rectius a&longs;cendit, gra<lb/>uius quoq; reddi. </s>

<s id="id.2.1.39.2.1.11.0">ſcilicet pondus ex quò <lb/>loco rectius deſcendit, grauius fieri. </s>

<s id="id.2.1.39.2.1.12.0">& ex quo rectius aſcendit, gra<lb/>uius quoq; reddi. </s>

<s id="id.2.1.39.3.1.1.0">Sit libra AB horizonti <lb/>æquidiſtans, cuius centrum <lb/>C ſit ſupra libram, perpen<lb/>diculumq; ſit CD. ſintq; in <lb/>AB ponderum æqualium <lb/>centra grauitatis poſita: mo<lb/>taq; ſit libra in EF. </s>

<s id="id.2.1.39.3.1.1.0">Sit libra AB horizonti <lb/>æquidi&longs;tans, cuius centrum <lb/>C &longs;it &longs;upra libram, perpen<lb/>diculumq; &longs;it CD. &longs;intq; in <lb/>AB ponderum æqualium <lb/>centra grauitatis po&longs;ita: mo<lb/>taq; &longs;it libra in EF. </s>

<s id="id.2.1.39.3.1.1.0.a">Dico <lb/>pondus in E maiorem ha<lb/>bere grauitatem, quàm pon<lb/>dus in F. </s>

<s id="N11AD1">& ob id libram <lb/>EF in AB redire. </s>

<s>& ob id libram <lb/>EF in AB redire. </s>

<s id="id.2.1.39.3.1.2.0">Produ<lb/>catur primùm CD vſq; ad <lb/>mundi <expan abbr="centrũ">centrum</expan>, quod ſit S. de <lb/>inde AC CB EC CF HS <lb/>

<s id="id.2.1.39.3.1.2.0">Produ<lb/>catur primùm CD v&longs;q; ad <lb/>mundi <expan abbr="centr&utilde;">centrum</expan>, quod &longs;it S. de <lb/>inde AC CB EC CF HS <lb/><expan abbr="cõnectantur">connectantur</expan>, à puncti&longs;q; EF <lb/>ip&longs;i HS æquidi&longs;tantes du<lb/>cantur Ek GFL. </s>

<expan abbr="cõnectantur">connectantur</expan>, à punctiſq; EF <lb/>ipſi HS æquidiſtantes du<lb/>cantur Ek GFL. </s>

<s id="id.2.1.39.3.1.2.0.a">Quoniam <lb/>igitur naturalis de&longs;cen&longs;us re<lb/>ctus totius magnitudinis, <lb/>libræ &longs;cilicet EF &longs;ic con&longs;ti<lb/>tutæ vná cum ponderibus, <lb/>e&longs;t <expan abbr="&longs;cundùm">secundum</expan> grauitatis cen<lb/>trum H per rectam HS; erit <lb/><figure id="id.036.01.059.1.jpg" xlink:href="036/01/059/1.jpg"></figure><lb/>quoq; ponderum in EF ita po&longs;sitorum de&longs;cen&longs;us &longs;ecundùm re<lb/>ctas Ek FL ip&longs;i HS parallelas; &longs;icuti &longs;upra demon&longs;trauimus. </s>

<s id="id.2.1.39.3.1.2.0.a">Quoniam <lb/>igitur naturalis deſcenſus re<lb/>ctus totius magnitudinis, <lb/>libræ ſcilicet EF ſic conſti<lb/>tutæ vná cum ponderibus, <lb/>eſt <expan abbr="ſcundùm">secundum</expan> grauitatis cen<lb/>trum H per rectam HS; erit <lb/>

<s id="id.2.1.39.3.1.3.0"><pb xlink:href="036/01/060.jpg"/>De&longs;cen&longs;us igitur, & a&longs;cen<lb/>&longs;us ponderum in EF ma<lb/>gis, minu&longs;uè obliquus di<lb/>cetur &longs;ecundùm acce&longs;&longs;um, <lb/>& rece&longs;&longs;um iuxta lineas Ek <lb/>FL de&longs;ignatum. </s>

<s id="id.2.1.39.3.1.4.0"><expan abbr="Quoniã">Quoniam</expan> <expan abbr="aut&etilde;">au<lb/>tem</expan> duo latera AD DC duo<lb/>bus lateribus BD DE &longs;unt <lb/>æqualia; anguliq; ad D &longs;unt <lb/><arrow.to.target n="note65"></arrow.to.target>recti; erit latus AC lateri <lb/>CB æquale. </s>

<lb/>quoq; ponderum in EF ita poſsitorum deſcenſus ſecundùm re<lb/>ctas Ek FL ipſi HS parallelas; ſicuti ſupra demonſtrauimus. </s>

<s id="id.2.1.39.3.1.5.0">& cùm pun<lb/>ctum C &longs;it immobile; dum <lb/>puncta AB mouentur, cir<lb/>culi circumferentiam de&longs;cri<lb/>bent, cuius &longs;emidiameter <lb/>erit AC. quare centro C, <lb/>circulus de&longs;cribatur AEBF. <lb/>puncta AB EF in circuli <lb/>circumferentia erunt. </s>

<s id="id.2.1.39.3.1.6.0">&longs;ed <lb/>cùm EF &longs;it ip&longs;i AB æqua <lb/><arrow.to.target n="note66"></arrow.to.target>lis; erit circumferentia <lb/>EAF circumferentiæ AFB <lb/>æqualis. </s>

<pb xlink:href="036/01/060.jpg" xlink:type="simple"/>Deſcenſus igitur, & aſcen<lb/>ſus ponderum in EF ma<lb/>gis, minuſuè obliquus di<lb/>cetur ſecundùm acceſſum, <lb/>& receſſum iuxta lineas Ek <lb/>FL deſignatum. </s>

<s id="id.2.1.39.3.1.7.0">quare dempta <lb/><figure id="id.036.01.060.1.jpg" xlink:href="036/01/060/1.jpg"></figure><lb/>communi AF, erit circumferentia EA circumferentiæ FB æqua<lb/>lis. </s>

<s id="id.2.1.39.3.1.8.0">Quoniam autem mixtus angulus CEA e&longs;t æqualis mixto <lb/>CFB; & HFB ip&longs;o CFB e&longs;t maior; angulus verò HEA ip&longs;o <lb/>CEA minor; erit angulus HFB angulo HEA maior. </s>

<expan abbr="Quoniã">Quoniam</expan>

<s id="id.2.1.39.3.1.9.0">à quibus <lb/><arrow.to.target n="note67"></arrow.to.target>&longs;i auferantur anguli HFG HEk æquales; erit angulus GFB an <lb/>gulo kEA maior. </s>

<expan abbr="autẽ">au<lb/>tem</expan> duo latera AD DC duo<lb/>bus lateribus BD DE ſunt <lb/>æqualia; anguliq; ad D ſunt <lb/>

<s id="id.2.1.39.3.1.10.0">ergo de&longs;cen&longs;us ponderis in E minus obliquus <lb/>erit a&longs;cen&longs;u ponderis in F. </s>

<arrow.to.target n="note65" xlink:type="simple"/>recti; erit latus AC lateri <lb/>CB æquale. </s>

<s>& quamquam pondus in E de&longs;cen<lb/>dendo, & pondus in F a&longs;cendendo per circumferentias mouean<lb/>tur æquales; quia tamen pondus in E ex hoc loco rectius de&longs;cen<lb/>dit, quàm pondus in F a&longs;cendit: idcirco naturalis potentia pon<lb/>deris in E re&longs;i&longs;tentiam violentiæ ponderis F &longs;uperabit. </s>

<s id="id.2.1.39.3.1.5.0">& cùm pun<lb/>ctum C ſit immobile; dum <lb/>puncta AB mouentur, cir<lb/>culi circumferentiam deſcri<lb/>bent, cuius ſemidiameter <lb/>erit AC. quare centro C, <lb/>circulus deſcribatur AEBF. <lb/>puncta AB EF in circuli <lb/>circumferentia erunt. </s>

<s id="id.2.1.39.3.1.11.0">quare <lb/>maiorem grauitatem habebit pondus in E, quàm pondus in F. </s>

<s id="id.2.1.39.3.1.11.0.a"><lb/>ergo pondus in E deor&longs;um, pondus verò in F &longs;ur&longs;um mouebitur: <pb n="24" xlink:href="036/01/061.jpg"/>donec libra EF in AB redeat. </s>

<arrow.to.target n="note66" xlink:type="simple"/>lis; erit circumferentia <lb/>EAF circumferentiæ AFB <lb/>æqualis. </s>

<s id="id.2.1.39.3.1.12.0">quod demon&longs;trare oportebat. </s>

<s id="id.2.1.39.3.1.7.0">quare dempta <lb/>

<lb/>communi AF, erit circumferentia EA circumferentiæ FB æqua<lb/>lis. </s>

<s id="id.2.1.39.3.1.8.0">Quoniam autem mixtus angulus CEA eſt æqualis mixto <lb/>CFB; & HFB ipſo CFB eſt maior; angulus verò HEA ipſo <lb/>CEA minor; erit angulus HFB angulo HEA maior. </s>

<s id="id.2.1.39.3.1.9.0">à quibus <lb/>

<arrow.to.target n="note67" xlink:type="simple"/>ſi auferantur anguli HFG HEk æquales; erit angulus GFB an <lb/>gulo kEA maior. </s>

<s id="id.2.1.39.3.1.10.0">ergo deſcenſus ponderis in E minus obliquus <lb/>erit aſcenſu ponderis in F. </s>

<s id="N11B73">& quamquam pondus in E deſcen<lb/>dendo, & pondus in F aſcendendo per circumferentias mouean<lb/>tur æquales; quia tamen pondus in E ex hoc loco rectius deſcen<lb/>dit, quàm pondus in F aſcendit: idcirco naturalis potentia pon<lb/>deris in E reſiſtentiam violentiæ ponderis F ſuperabit. </s>

<s id="id.2.1.39.3.1.11.0">quare <lb/>maiorem grauitatem habebit pondus in E, quàm pondus in F. </s>

<lb/>ergo pondus in E deorſum, pondus verò in F ſurſum mouebitur: <pb n="24" xlink:href="036/01/061.jpg" xlink:type="simple"/>donec libra EF in AB redeat. </s>

<s id="id.2.1.39.3.1.12.0">quod demonſtrare oportebat. </s>

<s id="id.2.1.40.1.1.1.0"><margin.target id="note65"></margin.target>4 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note65"/>4 <emph type="italics"/>Primi.<emph.end type="italics"/>

<s id="id.2.1.40.1.1.2.0"><margin.target id="note66"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 28 <emph type="italics"/>Tertii.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.40.1.1.3.0"><margin.target id="note67"></margin.target>29 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note66"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 28 <emph type="italics"/>Tertii.<emph.end type="italics"/>

</s>

<margin.target id="note67"/>29 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.41.1.1.1.0">Huius autem effectus ratio ab Ariſtotele poſita, hic manifeſta in <arrow.to.target n="note68" xlink:type="simple"/>

<s id="id.2.1.41.1.1.1.0">Huius autem effectus ratio ab Ari&longs;totele po&longs;ita, hic manife&longs;ta in <arrow.to.target n="note68"></arrow.to.target><lb/>tueri pote&longs;t. </s>

<lb/>tueri poteſt. </s>

<s id="id.2.1.41.1.1.2.0">&longs;it enim punctum N vbi CS EF &longs;e inuicem &longs;ecant. </s>

<s id="id.2.1.41.1.1.2.0">ſit enim punctum N vbi CS EF ſe inuicem ſecant. </s>

<s id="id.2.1.41.1.1.3.0"><lb/>& quoniam HE e&longs;t ip&longs;i HF æqualis; erit NE maior NF. </s>

<s>li<lb/>nea ergo CS, quam perpendiculum vocat, libram EF in partes di<lb/>uidet inæquales. </s>

<lb/>& quoniam HE eſt ipſi HF æqualis; erit NE maior NF. </s>

<s id="id.2.1.41.1.1.4.0">cùm itaq; pars libræ NE &longs;it maior NF; atq; id, <lb/>quod plus e&longs;t, nece&longs;&longs;e e&longs;t, deor&longs;um ferri: libra ergo EF ex parte E <lb/>deor&longs;um mouebitur, donec in AB redeat. </s>

<s id="N11BC6">li<lb/>nea ergo CS, quam perpendiculum vocat, libram EF in partes di<lb/>uidet inæquales. </s>

<s id="id.2.1.41.1.1.4.0">cùm itaq; pars libræ NE ſit maior NF; atq; id, <lb/>quod plus eſt, neceſſe eſt, deorſum ferri: libra ergo EF ex parte E <lb/>deorſum mouebitur, donec in AB redeat. </s>

<s id="id.2.1.42.1.1.1.0"><margin.target id="note68"></margin.target><emph type="italics"/>Ari&longs;totelis ratio.<emph.end type="italics"/></s>

<margin.target id="note68"/>

<emph type="italics"/>Ariſtotelis ratio.<emph.end type="italics"/>

</s>

<s id="id.2.1.43.1.1.1.0">Ex iis præterea, quæ ha<lb/>ctenus dicta ſunt inferre li<lb/>cet, libram EF velocius ab <lb/>eo ſitu in AB moueri; vndè <lb/>linea EF in directum pro<lb/>tracta in centrum mundi <lb/>perueniat. </s>

<s id="id.2.1.43.1.1.1.0">Ex iis præterea, quæ ha<lb/>ctenus dicta &longs;unt inferre li<lb/>cet, libram EF velocius ab <lb/>eo &longs;itu in AB moueri; vndè <lb/>linea EF in directum pro<lb/>tracta in centrum mundi <lb/>perueniat. </s>

<s id="id.2.1.43.1.1.2.0">vt ſit EFS recta <lb/>linea. </s>

<s id="id.2.1.43.1.1.2.0">vt &longs;it EFS recta <lb/>linea. </s>

<s id="id.2.1.43.1.1.3.0">& quoniam CD <lb/>CH, ſunt inter ſe ſe æqua<lb/>les. </s>

<s id="id.2.1.43.1.1.3.0">& quoniam CD <lb/>CH, &longs;unt inter &longs;e &longs;e æqua<lb/>les. </s>

<s id="id.2.1.43.1.1.4.0">ſi igitur centro C, ſpa<lb/>tioq; CD, circulus deſcri<lb/>batur DHM; erunt pun<lb/>cta DH in circuli circum<lb/>ferentia. </s>

<s id="id.2.1.43.1.1.4.0">&longs;i igitur centro C, &longs;pa<lb/>tioq; CD, circulus de&longs;cri<lb/>batur DHM; erunt pun<lb/>cta DH in circuli circum<lb/>ferentia. </s>

<s id="id.2.1.43.1.1.5.0">Quoniam au<lb/>tem CH ipſi EF eſt per<lb/>pendicularis; continget li<lb/>nea EHS circulum DHM <lb/>in puncto H. </s>

<s id="id.2.1.43.1.1.5.0">Quoniam au<lb/>tem CH ip&longs;i EF e&longs;t per<lb/>pendicularis; continget li<lb/>nea EHS circulum DHM <lb/>in puncto H. </s>

<s id="id.2.1.43.1.1.5.0.a">pondus igi<lb/>tur in H (ſicuti ſupra de<lb/>monſtrauimus) grauius <lb/>

<s id="id.2.1.43.1.1.5.0.a">pondus igi<lb/>tur in H (&longs;icuti &longs;upra de<lb/>mon&longs;trauimus) grauius <lb/><figure id="id.036.01.061.1.jpg" xlink:href="036/01/061/1.jpg"></figure><lb/>erit, quàm in alio &longs;itu circuli DHM. </s>

<s id="id.2.1.43.1.1.5.0.b">ergo magnitudo ex EF <lb/>ponderibus, & libra EF compo&longs;ita, cuius centrum grauitatis e&longs;t <lb/>in H, in hoc &longs;itu magis grauitabit, quàm in quocunq; alio &longs;itu <pb xlink:href="036/01/062.jpg"/>circuli fuerit punctum H. <lb/></s>

<lb/>erit, quàm in alio ſitu circuli DHM. </s>

<s>ab hoc igitur &longs;itu velo<lb/>cius, quàm à quocunq; <lb/>alio mouebitur. </s>

<s id="id.2.1.43.1.1.5.0.b">ergo magnitudo ex EF <lb/>ponderibus, & libra EF compoſita, cuius centrum grauitatis eſt <lb/>in H, in hoc ſitu magis grauitabit, quàm in quocunq; alio ſitu <pb xlink:href="036/01/062.jpg" xlink:type="simple"/>circuli fuerit punctum H. <lb/>

<s id="id.2.1.43.1.1.6.0">& &longs;i H <lb/>propius fuerit ip&longs;i D mi <lb/>nus grauitabit, minu&longs;q; <lb/>ab eo &longs;itu mouebitur. </s>

</s>

<s id="id.2.1.43.1.1.7.0"><lb/>&longs;emper enim de&longs;cen&longs;us <lb/>obliquior e&longs;t, & minus re<lb/>ctus. </s>

<s id="N11C2E">ab hoc igitur ſitu velo<lb/>cius, quàm à quocunq; <lb/>alio mouebitur. </s>

<s id="id.2.1.43.1.1.8.0">libra ergo EF velo<lb/>cius ab hoc &longs;itu mouebi<lb/>tur, quàm ab alio &longs;itu. </s>

<s id="id.2.1.43.1.1.6.0">& ſi H <lb/>propius fuerit ipſi D mi <lb/>nus grauitabit, minuſq; <lb/>ab eo ſitu mouebitur. </s>

<s id="id.2.1.43.1.1.9.0">& <lb/>&longs;i propius ad AB acce<lb/>det, inde minus mouebi<lb/>tur. </s>

<s id="id.2.1.43.1.1.10.0">Deinde quò longius <lb/>punctum H à puncto C <lb/>di&longs;tabit, velocius moue<lb/>bitur; quod <expan abbr="nõ">non</expan> <expan abbr="&longs;ol&utilde;">&longs;olum</expan> ex Ari<lb/>&longs;totele in principio quæ&longs;t<lb/>io num mechanicarum, & <lb/><figure id="id.036.01.062.1.jpg" xlink:href="036/01/062/1.jpg"></figure><lb/>ex &longs;uperius dictis patet; verùm etiam ex iis, quæ infra in &longs;exta <lb/>propo&longs;itione dicemus, manife&longs;tum erit. </s>

<lb/>ſemper enim deſcenſus <lb/>obliquior eſt, & minus re<lb/>ctus. </s>

<s id="id.2.1.43.1.1.11.0">libra igitur EF, quò ma<lb/>gis ab eius centro di&longs;tabit, adhuc velocius mouebitur. </s>

<s id="id.2.1.43.1.1.8.0">libra ergo EF velo<lb/>cius ab hoc ſitu mouebi<lb/>tur, quàm ab alio ſitu. </s>

<s id="id.2.1.43.1.1.9.0">& <lb/>ſi propius ad AB acce<lb/>det, inde minus mouebi<lb/>tur. </s>

<s id="id.2.1.43.1.1.10.0">Deinde quò longius <lb/>punctum H à puncto C <lb/>diſtabit, velocius moue<lb/>bitur; quod <expan abbr="nõ">non</expan>

<expan abbr="ſolũ">ſolum</expan> ex Ari<lb/>ſtotele in principio quæſt<lb/>io num mechanicarum, & <lb/>

<lb/>ex ſuperius dictis patet; verùm etiam ex iis, quæ infra in ſexta <lb/>propoſitione dicemus, manifeſtum erit. </s>

<s id="id.2.1.43.1.1.11.0">libra igitur EF, quò ma<lb/>gis ab eius centro diſtabit, adhuc velocius mouebitur. </s>

<s id="id.2.1.43.3.1.1.0">Sit deinde libra AB, <lb/>cuius centrum C ſit infra li<lb/>bram; ſintq; in AB pon<lb/>dera æqualia; libraq; ſit <lb/>mota in EF. </s>

<s id="id.2.1.43.3.1.1.0">Sit deinde libra AB, <lb/>cuius centrum C &longs;it infra li<lb/>bram; &longs;intq; in AB pon<lb/>dera æqualia; libraq; &longs;it <lb/>mota in EF. </s>

<s id="id.2.1.43.3.1.1.0.a">Dico maio<lb/>rem habere grauitatem <lb/>pondus in F, quàm pondus <lb/>in E. atq; ideo libram EF <lb/>deorſum ex parte F moue<lb/>ri. </s>

<s id="id.2.1.43.3.1.1.0.a">Dico maio<lb/>rem habere grauitatem <lb/>pondus in F, quàm pondus <lb/>in E. atq; ideo libram EF <lb/>deor&longs;um ex parte F moue<lb/>ri. </s>

<s id="id.2.1.43.3.1.2.0">Producatur DC ex <lb/>vtraq; parte vſq; ad mun<lb/>di centrum S, & vſq; ad <lb/>O, lineaq; HS ducatur, <lb/>cui à punctis EF æquidi<lb/>ſtantes ducantur GEk FL; <lb/>connectanturq; CE CF: <lb/>atq; centro C, ſpatioq; CE <lb/>circulus deſcribatur AEO <lb/>BF. </s>

<s id="id.2.1.43.3.1.2.0">Producatur DC ex <lb/>vtraq; parte v&longs;q; ad mun<lb/>di centrum S, & v&longs;q; ad <lb/>O, lineaq; HS ducatur, <lb/>cui à punctis EF æquidi<lb/>&longs;tantes ducantur GEk FL; <lb/>connectanturq; CE CF: <lb/>atq; centro C, &longs;patioq; CE <lb/>circulus de&longs;cribatur AEO <lb/>BF. </s>

<s id="id.2.1.43.3.1.2.0.a">ſimiliter demonſtra<lb/>bitur puncta ABEF in <lb/>circuli circumferentia eſſe; <lb/>deſcenſumq; libræ EF vná <lb/>cum ponderibus rectum ſe<lb/>cundùm lineam HS fieri; <lb/>ponderumq; in EF ſecun<lb/>

<s id="id.2.1.43.3.1.2.0.a">&longs;imiliter demon&longs;tra<lb/>bitur puncta ABEF in <lb/>circuli circumferentia e&longs;&longs;e; <lb/>de&longs;cen&longs;umq; libræ EF vná <lb/>cum ponderibus rectum &longs;e<lb/>cundùm lineam HS fieri; <lb/>ponderumq; in EF &longs;ecun<lb/><figure id="id.036.01.063.1.jpg" xlink:href="036/01/063/1.jpg"></figure>dùm<lb/> lineas GK FL ip&longs;i HS æquidi&longs;tantes. </s>

<figure id="id.036.01.063.1.jpg" place="text" xlink:href="036/01/063/1.jpg" xlink:type="simple"/>dùm<lb/> lineas GK FL ipſi HS æquidiſtantes. </s>

<s id="id.2.1.43.3.1.3.0">Quoniam autem an<lb/>gulus CFP æqualis e&longs;t angulo CEO: erit angulus HFP angulo <lb/>HEO maior. </s>

<s id="id.2.1.43.3.1.3.0">Quoniam autem an<lb/>gulus CFP æqualis eſt angulo CEO: erit angulus HFP angulo <lb/>HEO maior. </s>

<s id="id.2.1.43.3.1.4.0">angulus verò HFL æqualis e&longs;t angulo HEG. à <arrow.to.target n="note69"></arrow.to.target><lb/>quibus igitur &longs;i demantur anguli HFP HEO, erit angulus <lb/>LFP angulo GEO minor. </s>

<s id="id.2.1.43.3.1.4.0">angulus verò HFL æqualis eſt angulo HEG. à <arrow.to.target n="note69" xlink:type="simple"/>

<s id="id.2.1.43.3.1.5.0">quare de&longs;cen&longs;us ponderis in F rectior <lb/>erit a&longs;cen&longs;u ponderis in E. ergo naturalis potentia ponderis in <lb/>F re&longs;i&longs;tentiam violentiæ ponderis in E &longs;uperabit. </s>

<lb/>quibus igitur ſi demantur anguli HFP HEO, erit angulus <lb/>LFP angulo GEO minor. </s>

<s id="id.2.1.43.3.1.6.0">& ideo ma<lb/>iorem habebit grauitatem pondus in F, quàm pondus in E. </s>

<s id="id.2.1.43.3.1.5.0">quare deſcenſus ponderis in F rectior <lb/>erit aſcenſu ponderis in E. ergo naturalis potentia ponderis in <lb/>F reſiſtentiam violentiæ ponderis in E ſuperabit. </s>

<s id="id.2.1.43.3.1.6.0.a"><lb/>Pondus igitur in F deor&longs;um, pondus verò in E &longs;ur&longs;um mo<lb/>uebitur. </s>

<s id="id.2.1.43.3.1.6.0">& ideo ma<lb/>iorem habebit grauitatem pondus in F, quàm pondus in E. </s>

<lb/>Pondus igitur in F deorſum, pondus verò in E ſurſum mo<lb/>uebitur. </s>

<s id="id.2.1.44.1.1.1.0"><margin.target id="note69"></margin.target>29 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note69"/>29 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<s id="id.2.1.45.1.1.1.0">Ariſtotelis quoq; ratio hic perſpicua erit. </s>

<s id="id.2.1.45.1.1.1.0">Ari&longs;totelis quoq; ratio hic per&longs;picua erit. </s>

<s id="id.2.1.45.1.1.2.0">ſit enim punctum <arrow.to.target n="note70" xlink:type="simple"/>

<s id="id.2.1.45.1.1.2.0">&longs;it enim punctum <arrow.to.target n="note70"></arrow.to.target><pb xlink:href="036/01/064.jpg"/>N vbi CO EF &longs;e inuicem <lb/>&longs;ecant; erit NF maior <lb/>NE. </s>

<pb xlink:href="036/01/064.jpg" xlink:type="simple"/>N vbi CO EF ſe inuicem <lb/>ſecant; erit NF maior <lb/>NE. </s>

<s id="id.2.1.45.1.1.2.0.a">& quoniam CO per<lb/>pendiculum (&longs;ecundùm <lb/>ip&longs;um) libram EF in par<lb/>tes inæquales diuidit, & <lb/>maior pars e&longs;t ver&longs;us F, hoc <lb/>e&longs;t NF; libra EF ex par<lb/>te F deor&longs;um mouebitur: <lb/>cùm id, quod plus e&longs;t, deor<lb/>&longs;um feratur. </s>

<s id="id.2.1.45.1.1.2.0.a">& quoniam CO per<lb/>pendiculum (ſecundùm <lb/>ipſum) libram EF in par<lb/>tes inæquales diuidit, & <lb/>maior pars eſt verſus F, hoc <lb/>eſt NF; libra EF ex par<lb/>te F deorſum mouebitur: <lb/>cùm id, quod plus eſt, deor<lb/>ſum feratur. </s>

<s id="id.2.1.46.1.1.1.0"><margin.target id="note70"></margin.target><emph type="italics"/>Ari&longs;totelis ratio.<emph.end type="italics"/></s>

<margin.target id="note70"/>

<emph type="italics"/>Ariſtotelis ratio.<emph.end type="italics"/>

</s>

<s id="id.2.1.47.1.1.1.0">Similiter, éx dictis <lb/>quoq; eliciemus libram EF <lb/>centrum habens infra li<lb/>bram, quò magis à ſitu <lb/>AB diſtabit, velocius mo <lb/>ueri. </s>

<s id="id.2.1.47.1.1.1.0">Similiter, éx dictis <lb/>quoq; eliciemus libram EF <lb/>centrum habens infra li<lb/>bram, quò magis à &longs;itu <lb/>AB di&longs;tabit, velocius mo <lb/>ueri. </s>

<s id="id.2.1.47.1.1.2.0">centrum enim graui<lb/>tatis H, quò magis á pun<lb/>cto D diſtat, eò volecius <lb/>pondus ex EF ponderibus, <lb/>libraq; EF compoſitum <lb/>mouebitur, donec angulus <lb/>CHS rectus euadat. </s>

<s id="id.2.1.47.1.1.2.0">centrum enim graui<lb/>tatis H, quò magis á pun<lb/>cto D di&longs;tat, eò volecius <lb/>pondus ex EF ponderibus, <lb/>libraq; EF compo&longs;itum <lb/>mouebitur, donec angulus <lb/>CHS rectus euadat. </s>

<s id="id.2.1.47.1.1.3.0">ad<lb/>huc inſuper velocius moue<lb/>bitur, quò libram à centro <lb/>C magis diſtabit. <figure id="id.036.01.064.1.jpg" place="text" xlink:href="036/01/064/1.jpg" xlink:type="simple"/>

<s id="id.2.1.47.1.1.3.0">ad<lb/>huc in&longs;uper velocius moue<lb/>bitur, quò libram à centro <lb/>C magis di&longs;tabit. <figure id="id.036.01.064.1.jpg" xlink:href="036/01/064/1.jpg"></figure></s>

</s>

<s id="id.2.1.47.2.1.1.0">Ex ipſorum quinetiam rationibus, ac falſis ſupoſitionibus iam <lb/>declaratos libræ effectus, ac motus deducere, ac manifeſtare libet; <lb/>vt quanta ſit veritatis efficacia appareat, quippè ex falſis etiam <lb/>eluceſcere contendit. </s>

<s id="id.2.1.47.2.1.1.0">Ex ip&longs;orum quinetiam rationibus, ac fal&longs;is &longs;upo&longs;itionibus iam <lb/>declaratos libræ effectus, ac motus deducere, ac manife&longs;tare libet; <lb/>vt quanta &longs;it veritatis efficacia appareat, quippè ex fal&longs;is etiam <lb/>eluce&longs;cere contendit. </s>

<s id="id.2.1.47.4.1.1.0">Exponantur eadem, ſci <lb/>licet ſit circulus AEBF; <lb/>libraqué AB, cuius cen<lb/>trum C ſit ſupra libram, <lb/>moueatur in EF. </s>

<s id="id.2.1.47.4.1.1.0">Exponantur eadem, &longs;ci <lb/>licet &longs;it circulus AEBF; <lb/>libraqué AB, cuius cen<lb/>trum C &longs;it &longs;upra libram, <lb/>moueatur in EF. </s>

<s id="id.2.1.47.4.1.1.0.a">dico <lb/>pondus in E maiorem ibi <lb/>habere grauitatem, quàm <lb/>pondus in F; libramq; EF <lb/>in AB redire. </s>

<s id="id.2.1.47.4.1.2.0">Ducantur <lb/>à punctis EF ipſi AB <lb/>perpendiculares EL FM, <lb/>quæ inter ſe æquidiſtan<lb/>tes <arrow.to.target n="note71" xlink:type="simple"/>

<s id="id.2.1.47.4.1.2.0">Ducantur <lb/>à punctis EF ip&longs;i AB <lb/>perpendiculares EL FM, <lb/>quæ inter &longs;e æquidi&longs;tan<lb/>tes <arrow.to.target n="note71"></arrow.to.target><figure id="id.036.01.065.1.jpg" xlink:href="036/01/065/1.jpg"></figure>erunt; &longs;itq; punctum N, vbi AB EF &longs;e inuicem &longs;ecant. </s>

<figure id="id.036.01.065.1.jpg" place="text" xlink:href="036/01/065/1.jpg" xlink:type="simple"/>erunt; ſitq; punctum N, vbi AB EF ſe inuicem ſecant. </s>

<s id="id.2.1.47.4.1.3.0"><lb/>Quoniam igitur angulus FNM e&longs;t æqualis angulo ENL, & an<lb/>gulus <arrow.to.target n="note72"></arrow.to.target>F MN rectus recto ELN æqualis, ac reliquus NFM reli<lb/>quo <arrow.to.target n="note73"></arrow.to.target>NEL e&longs;t etiam æqualis; erit triangulum NLE triangu<lb/>lo NMF &longs;imile. </s>

<s id="id.2.1.47.4.1.4.0">vt igitur NE ad EL, ita NF ad FM; & per <arrow.to.target n="note74"></arrow.to.target><lb/>mutando vt EN ad NF, ita EL ad FM. &longs;ed cùm &longs;it HE ip&longs;i <arrow.to.target n="note75"></arrow.to.target><lb/>HF æqualis, erit EN maior NF; quare & EL maior erit FM. </s>

<lb/>Quoniam igitur angulus FNM eſt æqualis angulo ENL, & an<lb/>gulus <arrow.to.target n="note72" xlink:type="simple"/>F MN rectus recto ELN æqualis, ac reliquus NFM reli<lb/>quo <arrow.to.target n="note73" xlink:type="simple"/>NEL eſt etiam æqualis; erit triangulum NLE triangu<lb/>lo NMF ſimile. </s>

<s id="id.2.1.47.4.1.4.0.a"><lb/>& quoniam dum pondus in E per <expan abbr="circumferentiiam">circumferentiam</expan> EA de&longs;cendit, <lb/>pondus in F per circumferentiam FB ip&longs;i circumferentiæ EA <lb/>æqualem a&longs;cendit; de&longs;cen&longs;u&longs;q; ponderis in E de directo (vt ip<lb/>&longs;i dicunt) capit EL: a&longs;cen&longs;us verò ponderis in F de directo ca<lb/>pit FM; minus de directo capiet a&longs;cen&longs;us ponderis in F, quàm <lb/>de&longs;cen&longs;us ponderis in E. maiorem igitur grauitatem habebit pon<lb/>dus in E, quàm pondus in F. </s>

<s id="id.2.1.47.4.1.4.0">vt igitur NE ad EL, ita NF ad FM; & per <arrow.to.target n="note74" xlink:type="simple"/>

<lb/>mutando vt EN ad NF, ita EL ad FM. ſed cùm ſit HE ipſi <arrow.to.target n="note75" xlink:type="simple"/>

<lb/>HF æqualis, erit EN maior NF; quare & EL maior erit FM. </s>

<lb/>& quoniam dum pondus in E per <expan abbr="circumferentiiam">circumferentiam</expan> EA deſcendit, <lb/>pondus in F per circumferentiam FB ipſi circumferentiæ EA <lb/>æqualem aſcendit; deſcenſuſq; ponderis in E de directo (vt ip<lb/>ſi dicunt) capit EL: aſcenſus verò ponderis in F de directo ca<lb/>pit FM; minus de directo capiet aſcenſus ponderis in F, quàm <lb/>deſcenſus ponderis in E. maiorem igitur grauitatem habebit pon<lb/>dus in E, quàm pondus in F. </s>

<s id="id.2.1.48.1.1.1.0"><margin.target id="note71"></margin.target>28 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<margin.target id="note71"/>28 <emph type="italics"/>Primi.<emph.end type="italics"/>

<s id="id.2.1.48.1.1.2.0"><margin.target id="note72"></margin.target>15 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.48.1.1.3.0"><margin.target id="note73"></margin.target>29 <emph type="italics"/>Primi.<emph.end type="italics"/></s>

<s id="id.2.1.48.1.1.4.0"><margin.target id="note74"></margin.target>4 <emph type="italics"/>Sexti.<emph.end type="italics"/></s>

<margin.target id="note72"/>15 <emph type="italics"/>Primi.<emph.end type="italics"/>

<s id="id.2.1.48.1.1.5.0"><margin.target id="note75"></margin.target>16 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<margin.target id="note73"/>29 <emph type="italics"/>Primi.<emph.end type="italics"/>

</s>

<margin.target id="note74"/>4 <emph type="italics"/>Sexti.<emph.end type="italics"/>

</s>

<margin.target id="note75"/>16 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.49.1.1.1.0">Producatur CD ex vtraq; parte in OP, quæ lineam EF in <lb/>puncto S ſecet. </s>

<s id="id.2.1.49.1.1.1.0">Producatur CD ex vtraq; parte in OP, quæ lineam EF in <lb/>puncto S &longs;ecet. </s>

<s id="id.2.1.49.1.1.2.0">& quoniam (vt aiunt) quò magis pondus à li<lb/>nea directionis OP diſtat, eò fit grauius; idcirco hoc quoq; me <lb/>dio pondus in E maiorem habere <expan abbr="grauitauitatem">grauitatem</expan> pondere in F o<lb/>ſtendetur. </s>

<s id="id.2.1.49.1.1.2.0">& quoniam (vt aiunt) quò magis pondus à li<lb/>nea directionis OP di&longs;tat, eò fit grauius; idcirco hoc quoq; me <lb/>dio pondus in E maiorem habere <expan abbr="grauitauitatem">grauitatem</expan> pondere in F o<lb/>&longs;tendetur. </s>

<s id="id.2.1.49.1.1.3.0">Ducantur à punctis EF ipſi OP perpendiculares EQ <lb/>FR. ſimili ratione oſtendetur, triangulum QES triangulo RFS <lb/>ſimile eſſe; lineamq; EQ ipſa RF maiorem eſſe. </s>

<s id="id.2.1.49.1.1.3.0">Ducantur à punctis EF ip&longs;i OP perpendiculares EQ <lb/>FR. &longs;imili ratione o&longs;tendetur, triangulum QES triangulo RFS <lb/>&longs;imile e&longs;&longs;e; lineamq; EQ ip&longs;a RF maiorem e&longs;&longs;e. </s>

<s id="id.2.1.49.1.1.4.0">pondus itaq; <lb/>in E magis à linea OP diſtabit, quàm pondus in F; ac propterea <lb/>pondus in E maiorem habebit grauitatem pondere in F. ex quibus <lb/>reditus libræ EF in AB manifeſtus apparet. </s>

<s id="id.2.1.49.1.1.4.0">pondus itaq; <lb/>in E magis à linea OP di&longs;tabit, quàm pondus in F; ac propterea <lb/>pondus in E maiorem habebit grauitatem pondere in F. ex quibus <lb/>reditus libræ EF in AB manife&longs;tus apparet. </s>

<s id="id.2.1.49.3.1.1.0">Si autem centrum libræ <lb/>ſit infra libram, tunc pon<lb/>dus depreſſum maiorem <lb/>habere grauitatem eleuato <lb/>iiſdem mediis oſtendetur. </s>

<s id="id.2.1.49.3.1.1.0">Si autem centrum libræ <lb/>&longs;it infra libram, tunc pon<lb/>dus depre&longs;&longs;um maiorem <lb/>habere grauitatem eleuato <lb/>ii&longs;dem mediis o&longs;tendetur. </s>

<s id="id.2.1.49.3.1.2.0"><lb/>ducantur à punctis EF ip<lb/>&longs;i AB perpendiculares EL <lb/>FM. </s>

<lb/>ducantur à punctis EF ip<lb/>ſi AB perpendiculares EL <lb/>FM. </s>

<s>&longs;imiliter demon&longs;tra<lb/>bitur EL maiorem e&longs;&longs;e <lb/>FM; & ob id de&longs;cen&longs;us <lb/>ponderis in F minus de di <lb/>recto capiet, quàm a&longs;cen<lb/><figure id="id.036.01.066.1.jpg" xlink:href="036/01/066/1.jpg"></figure><lb/>&longs;us ponderis in E: quocirca re&longs;i&longs;tentia violentiæ ponderis in E &longs;u<lb/>perabit naturalem propen&longs;ionem ponderis in F. </s>

<s id="N11E38">ſimiliter demonſtra<lb/>bitur EL maiorem eſſe <lb/>FM; & ob id deſcenſus <lb/>ponderis in F minus de di <lb/>recto capiet, quàm aſcen<lb/>

<s>ergo pondus in E <lb/>pondere in F grauius erit. </s>

<lb/>ſus ponderis in E: quocirca reſiſtentia violentiæ ponderis in E ſu<lb/>perabit naturalem propenſionem ponderis in F. </s>

<s id="N11E4C">ergo pondus in E <lb/>pondere in F grauius erit. </s>

<s id="id.2.1.49.4.1.1.0">Producatur etiam CD ex vtraq; parte in OP; ipſiq; à punctis <lb/>EF perpendiculares ducantur EQ FR. </s>

<s id="id.2.1.49.4.1.1.0">Producatur etiam CD ex vtraq; parte in OP; ip&longs;iq; à punctis <lb/>EF perpendiculares ducantur EQ FR. </s>

<s id="N11E58">eodem prorſus modo <lb/>oſtendetur, lineam EQ maiorem eſſe FR. </s>

<s>eodem pror&longs;us modo <lb/>o&longs;tendetur, lineam EQ maiorem e&longs;&longs;e FR. </s>

<s id="N11E5C">pondus ideò in E ma<lb/>gis à linea directionis OP diſtabit, quàm pondus in F. </s>

<s>pondus ideò in E ma<lb/>gis à linea directionis OP di&longs;tabit, quàm pondus in F. </s>

<s id="N11E60">maio<lb/>rem igitur grauitatem habebit pondus in E, quàm pondus in F. <lb/>

<s>maio<lb/>rem igitur grauitatem habebit pondus in E, quàm pondus in F. <lb/></s>

</s>

<s>ex quibus &longs;equitur, libram EF ex parte E deor&longs;um moueri. </s>

<s id="N11E65">ex quibus ſequitur, libram EF ex parte E deorſum moueri. </s>

<s id="id.2.1.49.5.1.1.0">Ariſtoteles itaq; has duas tantùm quæſtiones propoſuit, ter<lb/>tiamq; reliquit; ſcilicet cùm centrum libræ in ipſa eſt libra: hanc <lb/>autem ommiſsit, vt notam, quemadmodum res valde notas præ<lb/>termittere ſolet. </s>

<s id="id.2.1.49.5.1.1.0">Ari&longs;toteles itaq; has duas tantùm quæ&longs;tiones propo&longs;uit, ter<lb/>tiamq; reliquit; &longs;cilicet cùm centrum libræ in ip&longs;a e&longs;t libra: hanc <lb/>autem ommi&longs;sit, vt notam, quemadmodum res valde notas præ<lb/>termittere &longs;olet. </s>

<s id="id.2.1.49.5.1.2.0">nam cui dubium, ſi pondus in eius centro gra<lb/>uitatis ſuſtineatur, quin maneat? </s>

<s id="id.2.1.49.5.1.2.0">nam cui dubium, &longs;i pondus in eius centro gra<lb/>uitatis &longs;u&longs;tineatur, quin maneat? </s>

<s id="id.2.1.49.5.1.3.0">Ea verò, quæ ex ipſius ſenten<lb/>tia attulimus, aliquis reprehendere poſſet, nos integram eius ſenten<lb/>tiam minimè protuliſſe <expan abbr="affimans">affirmans</expan>. </s>

<s id="id.2.1.49.5.1.3.0">Ea verò, quæ ex ip&longs;ius &longs;enten<lb/>tia attulimus, aliquis reprehendere po&longs;&longs;et, nos integram eius &longs;enten<lb/>tiam minimè protuli&longs;&longs;e <expan abbr="affimans">affirmans</expan>. </s>

<s id="id.2.1.49.5.1.4.0">nam cùm in ſecunda parte ſe<lb/>cundæ quæſtionis proponit, cur libra, trutina deorſum conſtituta, <lb/>quando deorſum lato pondere quiſpiam id amouet, non aſcen<lb/>dit, ſed manet? </s>

<s id="id.2.1.49.5.1.4.0">nam cùm in &longs;ecunda parte &longs;e<lb/>cundæ quæ&longs;tionis proponit, cur libra, trutina deor&longs;um con&longs;tituta, <lb/>quando deor&longs;um lato pondere qui&longs;piam id amouet, non a&longs;cen<lb/>dit, &longs;ed manet? </s>

<s id="id.2.1.49.5.1.5.0">non aſſerit adhuc libram deorſum moueri; ſed <lb/>manere. </s>

<s id="id.2.1.49.5.1.5.0">non a&longs;&longs;erit adhuc libram deor&longs;um moueri; &longs;ed <lb/>manere. </s>

<s id="id.2.1.49.5.1.6.0">quod in vltima quoq; concluſione colligiſſe videtur. </s>

<s id="id.2.1.49.5.1.6.0">quod in vltima quoq; conclu&longs;ione colligi&longs;&longs;e videtur. </s>

<s id="id.2.1.49.5.1.7.0">Ve <lb/>rùm hoc non ſolum nobis non repugnat, ſed ſi rectè intelligitur, <lb/>maximè ſuffragatur. </s>

<s id="id.2.1.49.5.1.7.0">Ve <lb/>rùm hoc non &longs;olum nobis non repugnat, &longs;ed &longs;i rectè intelligitur, <lb/>maximè &longs;uffragatur. </s>

<s id="id.2.1.49.7.1.1.0">Sit enim libra AB <lb/>horizonti æquidiſtans, <lb/>cuius centrum E ſit <lb/>infra libram. </s>

<s id="id.2.1.49.7.1.1.0">Sit enim libra AB <lb/>horizonti æquidi&longs;tans, <lb/>cuius centrum E &longs;it <lb/>infra libram. </s>

<s id="id.2.1.49.7.1.2.0">quia ve <lb/>rò Ariſtoteles libram, <lb/>ſicuti actu eſt, conſide<lb/>rat; ideò neceſſe eſt <lb/>trutinam, vel aliquid <lb/>aliud infra centrum E <lb/>collocare, vt EF <lb/>(quod quidem truti<lb/>na erit) ita vt centrum <lb/>E ſuſtineat. </s>

<s id="id.2.1.49.7.1.2.0">quia ve <lb/>rò Ari&longs;toteles libram, <lb/>&longs;icuti actu e&longs;t, con&longs;ide<lb/>rat; ideò nece&longs;&longs;e e&longs;t <lb/>trutinam, vel aliquid <lb/>aliud infra centrum E <lb/>collocare, vt EF <lb/>(quod quidem truti<lb/>na erit) ita vt centrum <lb/>E &longs;u&longs;tineat. </s>

<s id="id.2.1.49.7.1.3.0">&longs;itq; per<lb/><figure id="id.036.01.067.1.jpg" xlink:href="036/01/067/1.jpg"></figure><lb/>pendiculum ECD. </s>

<s>& vt libra AB ab hoc moueatur &longs;itu; dicit <lb/>Ari&longs;toteles, ponatur pondus in B, quod cùm &longs;it graue, libram ex <lb/>parte B deor&longs;um mouebit; putá in G. </s>

<lb/>pendiculum ECD. </s>

<s>ita vt propter impedimen<lb/>tum deor&longs;um amplius moueri non poterit. </s>

<s id="N11ECB">& vt libra AB ab hoc moueatur ſitu; dicit <lb/>Ariſtoteles, ponatur pondus in B, quod cùm ſit graue, libram ex <lb/>parte B deorſum mouebit; putá in G. </s>

<s id="id.2.1.49.7.1.4.0">non enim dicit Ari<lb/>&longs;toteles, moueatur libra ex parte B deor&longs;um, quou&longs;q; libuerit; dein <lb/>de relinquatur, vt nos diximus: &longs;ed præcipit, vt in ip&longs;o B po<lb/>natur pondus, quod ex ip&longs;ius natura deor&longs;um &longs;emper mouebi<lb/>tur; donec libra trutinæ, &longs;iue alicui alii adhæreat. </s>

<s id="N11ED1">ita vt propter impedimen<lb/>tum deorſum amplius moueri non poterit. </s>

<s id="id.2.1.49.7.1.5.0">& quando B erit <lb/>in G, erit libra in GH; in quo &longs;itu, ablato pondere, manebit: <lb/>cùm maior pars libræ à perpendiculo &longs;it ver&longs;us G, quæ e&longs;t DG, <lb/>quàm DH. </s>

<s id="id.2.1.49.7.1.4.0">non enim dicit Ari<lb/>ſtoteles, moueatur libra ex parte B deorſum, quouſq; libuerit; dein <lb/>de relinquatur, vt nos diximus: ſed præcipit, vt in ipſo B po<lb/>natur pondus, quod ex ipſius natura deorſum ſemper mouebi<lb/>tur; donec libra trutinæ, ſiue alicui alii adhæreat. </s>

<s id="id.2.1.49.7.1.5.0.a">nec deor&longs;um amplius mouebitur; nam libra, vel <lb/>trutinæ, vel alteri cuipiam, quod centrum libræ &longs;u&longs;tineat, incum<lb/>bet. </s>

<s id="id.2.1.49.7.1.5.0">& quando B erit <lb/>in G, erit libra in GH; in quo ſitu, ablato pondere, manebit: <lb/>cùm maior pars libræ à perpendiculo ſit verſus G, quæ eſt DG, <lb/>quàm DH. </s>

<s id="id.2.1.49.7.1.6.0">&longs;i enim huic non adhæreret, libra ex parte G deor&longs;um ex <lb/>ip&longs;ius &longs;ententia moueretur; cùm id, quod plus e&longs;t, &longs;cilicet DG, <lb/>deor&longs;um ferri &longs;it nece&longs;&longs;e. </s>

<s id="id.2.1.49.7.1.5.0.a">nec deorſum amplius mouebitur; nam libra, vel <lb/>trutinæ, vel alteri cuipiam, quod centrum libræ ſuſtineat, incum<lb/>bet. </s>

<s id="id.2.1.49.7.1.6.0">ſi enim huic non adhæreret, libra ex parte G deorſum ex <lb/>ipſius ſententia moueretur; cùm id, quod plus eſt, ſcilicet DG, <lb/>deorſum ferri ſit neceſſe. </s>

<s id="id.2.1.49.8.1.1.0">Cæterum quis adhuc dicere poterit, ſi paruum imponatur pon<lb/>dus in B, mouebitur quidem libra deorſum, non autem vſq; ad <lb/>G. </s>

<s id="id.2.1.49.8.1.1.0">Cæterum quis adhuc dicere poterit, &longs;i paruum imponatur pon<lb/>dus in B, mouebitur quidem libra deor&longs;um, non autem v&longs;q; ad <lb/>G. </s>

<s id="N11F01">in quò ſitu ſecundùm Ariſtotelem, ablato pondere, mane<lb/>re deberet. </s>

<s>in quò &longs;itu &longs;ecundùm Ari&longs;totelem, ablato pondere, mane<lb/>re deberet. </s>

<s id="id.2.1.49.8.1.2.0">quod experimento patet; cùm in vna tantùm libræ <lb/>extremitate, impoſito onere, hocq; vel maiore, vel minore, libra <lb/>plus, minuſuè inclinetur. </s>

<s id="id.2.1.49.8.1.2.0">quod experimento patet; cùm in vna tantùm libræ <lb/>extremitate, impo&longs;ito onere, hocq; vel maiore, vel minore, libra <lb/>plus, minu&longs;uè inclinetur. </s>

<s id="id.2.1.49.8.1.3.0">Quod eſt quidem veriſſimum, centro ſupra <lb/>libram, non autem infra, neq; in ipſa libra collocato. </s>

<s id="id.2.1.49.8.1.3.0">Quod e&longs;t quidem veri&longs;&longs;imum, centro &longs;upra <lb/>libram, non autem infra, neq; in ip&longs;a libra collocato. </s>

<s id="id.2.1.49.8.1.4.0">Vt exempli <lb/>gratia. </s>

<s id="id.2.1.49.10.1.1.0">Sit libra horizonti æ<lb/>quidiſtans AB, cuius cen<lb/>trum C ſit ſupra libram, <lb/>perpendiculumq; CD ho<lb/>rizonti perpendiculare, <lb/>quod ex parte D produca<lb/>tur in H. </s>

<s id="id.2.1.49.10.1.1.0">Sit libra horizonti æ<lb/>quidi&longs;tans AB, cuius cen<lb/>trum C &longs;it &longs;upra libram, <lb/>perpendiculumq; CD ho<lb/>rizonti perpendiculare, <lb/>quod ex parte D produca<lb/>tur in H. </s>

<s id="id.2.1.49.10.1.1.0.a">Quoniam enim <lb/>conſiderata libræ grauita<lb/>te, erit punctum D libræ <lb/>centrum grauitatis. </s>

<s id="id.2.1.49.10.1.1.0.a">Quoniam enim <lb/>con&longs;iderata libræ grauita<lb/>te, erit punctum D libræ <lb/>centrum grauitatis. </s>

<s id="id.2.1.49.10.1.2.0">ſi ergo <lb/>in B paruum imponatur <lb/>pondus, cuius centrum <lb/>

<s id="id.2.1.49.10.1.2.0">&longs;i ergo <lb/>in B paruum imponatur <lb/>pondus, cuius centrum <lb/><figure id="id.036.01.068.1.jpg" xlink:href="036/01/068/1.jpg"></figure><lb/>grauitatis &longs;it in puncto B; magnitudinis ex libra AB, & pondere <lb/>in B compo&longs;itæ non erit amplius centrum grauitatis D; &longs;ed erit in <lb/><arrow.to.target n="note76"></arrow.to.target>linea DB, vt in E: ita vt DE ad EB &longs;it, vt pondus in B ad gra<lb/>uitatem libræ AB. </s>

<s>Connectatur CE. </s>

<lb/>grauitatis ſit in puncto B; magnitudinis ex libra AB, & pondere <lb/>in B compoſitæ non erit amplius centrum grauitatis D; ſed erit in <lb/>

<s id="id.2.1.49.10.1.2.0.a">Quoniam autem pun<lb/>ctum C e&longs;t immobile, dum libra mouetur, punctum E circuli cir<lb/>cumferentiam EFG de&longs;cribet, cuius &longs;emidiameter CE, & cen<lb/>trum C. </s>

<arrow.to.target n="note76" xlink:type="simple"/>linea DB, vt in E: ita vt DE ad EB ſit, vt pondus in B ad gra<lb/>uitatem libræ AB. </s>

<s>quia verò CD horizonti e&longs;t perpendicularis, linea CE <lb/>horizonti perpendicularis nequaquam erit. </s>

<s id="N11F4C">Connectatur CE. </s>

<s id="id.2.1.49.10.1.3.0">quare magnitudo ex <lb/>AB, & pondere in B compo&longs;ita minimè in hoc &longs;itu manebit; &longs;ed <lb/><arrow.to.target n="note77"></arrow.to.target>deor&longs;um &longs;ecundùm eius grauitatis centrum E per circumferen<lb/>tiam EFG mouebitur; donec CE horizonti perpendicularis eua<lb/>dat; hoc e&longs;t, donec CE in CDF perueniat. </s>

<s id="id.2.1.49.10.1.2.0.a">Quoniam autem pun<lb/>ctum C eſt immobile, dum libra mouetur, punctum E circuli cir<lb/>cumferentiam EFG deſcribet, cuius ſemidiameter CE, & cen<lb/>trum C. </s>

<s id="id.2.1.49.10.1.4.0">atq; tunc libra AB <lb/>mota erit in kL, in quo &longs;itu libra vná cum pondere manebit. </s>

<s id="N11F57">quia verò CD horizonti eſt perpendicularis, linea CE <lb/>horizonti perpendicularis nequaquam erit. </s>

<s id="id.2.1.49.10.1.5.0">nec <lb/>deor&longs;um amplius mouebitur. </s>

<s id="id.2.1.49.10.1.3.0">quare magnitudo ex <lb/>AB, & pondere in B compoſita minimè in hoc ſitu manebit; ſed <lb/>

<s id="id.2.1.49.10.1.6.0">Si verò in B ponatur pondus graui<lb/>us; centrum grauitatis totius magnitudinis erit ip&longs;i B propius, vt in <lb/>M. </s>

<arrow.to.target n="note77" xlink:type="simple"/>deorſum ſecundùm eius grauitatis centrum E per circumferen<lb/>tiam EFG mouebitur; donec CE horizonti perpendicularis eua<lb/>dat; hoc eſt, donec CE in CDF perueniat. </s>

<s>& tunc libra deor&longs;um, donec iuncta CM in linea CDH per <lb/>ueniat, mouebitur. </s>

<s id="id.2.1.49.10.1.4.0">atq; tunc libra AB <lb/>mota erit in kL, in quo ſitu libra vná cum pondere manebit. </s>

<s id="id.2.1.49.10.1.7.0">Ex maiore igitur, & minore pondere in B po<lb/>&longs;ito, libra plus, minu&longs;uè inclinabitur. </s>

<s id="id.2.1.49.10.1.5.0">nec <lb/>deorſum amplius mouebitur. </s>

<s id="id.2.1.49.10.1.8.0">ex quo &longs;equitur pondus B <lb/>quarta circuli parte minorem &longs;emper circumferentiam de&longs;cribe<lb/>re, cùm angulus FCE &longs;it &longs;emper acutus. </s>

<s id="id.2.1.49.10.1.6.0">Si verò in B ponatur pondus graui<lb/>us; centrum grauitatis totius magnitudinis erit ipſi B propius, vt in <lb/>M. </s>

<s id="id.2.1.49.10.1.9.0">nunquam enim punctum <lb/>B v&longs;q; ad lineam CH perueniet, cùm centrum grauitatis ponde<lb/>ris, & libræ &longs;imul &longs;emper inter DB exi&longs;tat. </s>

<s id="N11F7A">& tunc libra deorſum, donec iuncta CM in linea CDH per <lb/>ueniat, mouebitur. </s>

<s id="id.2.1.49.10.1.10.0">quò tamen pondus <lb/>in B grauius fuerit, maiorem quoq; circumferentiam de&longs;cribet. </s>

<s id="id.2.1.49.10.1.7.0">Ex maiore igitur, & minore pondere in B po<lb/>ſito, libra plus, minuſuè inclinabitur. </s>

<s id="id.2.1.49.10.1.11.0"><lb/>eò enim magis punctum B ad lineam CH accedet. </s>

<s id="id.2.1.49.10.1.8.0">ex quo ſequitur pondus B <lb/>quarta circuli parte minorem ſemper circumferentiam deſcribe<lb/>re, cùm angulus FCE ſit ſemper acutus. </s>

<s id="id.2.1.49.10.1.9.0">nunquam enim punctum <lb/>B vſq; ad lineam CH perueniet, cùm centrum grauitatis ponde<lb/>ris, & libræ ſimul ſemper inter DB exiſtat. </s>

<s id="id.2.1.49.10.1.10.0">quò tamen pondus <lb/>in B grauius fuerit, maiorem quoq; circumferentiam deſcribet. </s>

<lb/>eò enim magis punctum B ad lineam CH accedet. </s>

<s id="id.2.1.50.1.1.1.0"><margin.target id="note76"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<margin.target id="note76"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

<s id="id.2.1.50.1.1.3.0"><margin.target id="note77"></margin.target>1. <emph type="italics"/>Huius.<emph.end type="italics"/></s>

</s>

<margin.target id="note77"/>1. <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.51.1.2.1.0">Habeat autem libra AB <lb/>centrum C in ipſa libra, atq; <lb/>in eius medio: erit C libræ <lb/>centrum quoq; grauitatis; <lb/>à quo ipſi AB, horizontiq; <lb/>perpendicularis ducatur FC <lb/>G. </s>

<s id="id.2.1.51.1.2.1.0">Habeat autem libra AB <lb/>centrum C in ip&longs;a libra, atq; <lb/>in eius medio: erit C libræ <lb/>centrum quoq; grauitatis; <lb/>à quo ip&longs;i AB, horizontiq; <lb/>perpendicularis ducatur FC <lb/>G. </s>

<s id="N11FC7">ponatur deinde in B <lb/>quoduis pondus; erit totius <lb/>magnitudinis centrum gra<lb/>uitatis putá in E; ita vt CE <lb/>

<s>ponatur deinde in B <lb/>quoduis pondus; erit totius <lb/>magnitudinis centrum gra<lb/>uitatis putá in E; ita vt CE <lb/><figure id="id.036.01.069.1.jpg" xlink:href="036/01/069/1.jpg"></figure><lb/>ad EB &longs;it, vt pondus in B ad libræ grauitatem. </s>

<s id="id.2.1.51.1.2.2.0">& quoniam CE <lb/>non e&longs;t horizonti perpendicularis, libra AB, atq; pondus in B <lb/>in hoc &longs;itu nunquam manebunt; &longs;ed deor&longs;um ex parte B mouebun<lb/>tur, donec CE horizonti fiat perpendicularis. </s>

<lb/>ad EB ſit, vt pondus in B ad libræ grauitatem. </s>

<s id="id.2.1.51.1.2.3.0">hoc e&longs;t donec li<lb/>bra AB in FG perueniat. </s>

<s id="id.2.1.51.1.2.2.0">& quoniam CE <lb/>non eſt horizonti perpendicularis, libra AB, atq; pondus in B <lb/>in hoc ſitu nunquam manebunt; ſed deorſum ex parte B mouebun<lb/>tur, donec CE horizonti fiat perpendicularis. </s>

<s id="id.2.1.51.1.2.4.0">ex quo patet, quolibet pondus in B <lb/>circuli quartam &longs;emper de&longs;cribere. </s>

<s id="id.2.1.51.1.2.3.0">hoc eſt donec li<lb/>bra AB in FG perueniat. </s>

<s id="id.2.1.51.1.2.4.0">ex quo patet, quolibet pondus in B <lb/>circuli quartam ſemper deſcribere. </s>

<s id="id.2.1.51.2.1.1.0">Sit autem centrum C in<lb/>fra libram AB. </s>

<s id="N11FF2">ſitq; DCE <lb/>perpendiculum. </s>

<s>&longs;itq; DCE <lb/>perpendiculum. </s>

<s id="id.2.1.51.2.1.2.0">ſimiliter <lb/>poſito in B pondere, cen<lb/>trum grauitatis magnitudi<lb/>nis ex AB libra, & ponde<lb/>re in B compoſitæ in linea <lb/>DB erit; vt in F; ita vt DF <lb/>ad FB ſit, vt pondus in B <lb/>

<s id="id.2.1.51.2.1.2.0">&longs;imiliter <lb/>po&longs;ito in B pondere, cen<lb/>trum grauitatis magnitudi<lb/>nis ex AB libra, & ponde<lb/>re in B compo&longs;itæ in linea <lb/>DB erit; vt in F; ita vt DF <lb/>ad FB &longs;it, vt pondus in B <lb/><figure id="id.036.01.069.2.jpg" xlink:href="036/01/069/2.jpg"></figure><lb/>ad libræ pondus. </s>

<lb/>ad libræ pondus. </s>

<s id="id.2.1.51.2.1.3.0">Iungatur CF. </s>

<s id="N12010">& quoniam CD horizonti eſt <lb/>perpendicularis; linea CF horizonti nequaquam perpendicula<lb/>ris exiſtet. </s>

<s>& quoniam CD horizonti e&longs;t <lb/>perpendicularis; linea CF horizonti nequaquam perpendicula<lb/>ris exi&longs;tet. </s>

<s id="id.2.1.51.2.1.4.0">quare magnitudo ex AB libra, ac pondere in B com<lb/>poſita in hoc ſitu nunquam perſiſtet; ſed deorſum, niſi aliquid <lb/>impediat, mouebitur; donec CF in DCE perueniat: in quo ſitu <lb/>libra vná cum pondere manebit. </s>

<s id="id.2.1.51.2.1.4.0">quare magnitudo ex AB libra, ac pondere in B com<lb/>po&longs;ita in hoc &longs;itu nunquam per&longs;i&longs;tet; &longs;ed deor&longs;um, ni&longs;i aliquid <lb/>impediat, mouebitur; donec CF in DCE perueniat: in quo &longs;itu <lb/>libra vná cum pondere manebit. </s>

<s id="id.2.1.51.2.1.5.0">& punctum B erit vt in G, atq; <lb/>punctum A in H, libraq; GH non amplius centrum infra, ſed ſu<lb/>pra ipſam habebit. </s>

<s id="id.2.1.51.2.1.5.0">& punctum B erit vt in G, atq; <lb/>punctum A in H, libraq; GH non amplius centrum infra, &longs;ed &longs;u<lb/>pra ip&longs;am habebit. </s>

<s id="id.2.1.51.2.1.6.0">quod idem ſemper eueniet; quamuis mini<lb/>mum imponatur pondus in B. </s>

<s id="id.2.1.51.2.1.6.0">quod idem &longs;emper eueniet; quamuis mini<lb/>mum imponatur pondus in B. </s>

<s id="N1202B">ergo priuſquam B perueniat ad <lb/>G; neceſſe eſt libram, ſiue trutinæ deorſum poſitæ, vel alicui <pb xlink:href="036/01/070.jpg" xlink:type="simple"/>alteri, quod centrum C ſu<lb/>ſtineat, occurrere; ibiq; ad<lb/>hærere. </s>

<s>ergo priu&longs;quam B perueniat ad <lb/>G; nece&longs;&longs;e e&longs;t libram, &longs;iue trutinæ deor&longs;um po&longs;itæ, vel alicui <pb xlink:href="036/01/070.jpg"/>alteri, quod centrum C &longs;u<lb/>&longs;tineat, occurrere; ibiq; ad<lb/>hærere. </s>

<s id="id.2.1.51.2.1.7.0">ex hoc ſequitur, pon<lb/>dus in B vltra lineam Dk <lb/>ſemper moueri; ac circuli <lb/>quarta maiorem ſemper cir<lb/>

<s id="id.2.1.51.2.1.7.0">ex hoc &longs;equitur, pon<lb/>dus in B vltra lineam Dk <lb/>&longs;emper moueri; ac circuli <lb/>quarta maiorem &longs;emper cir<lb/><expan abbr="cumfer&etilde;tiam">cumferentiam</expan> de&longs;cribere: e&longs;t <lb/>enim angulus FCE &longs;emper <lb/>obtu&longs;us, cùm angulus DCF <lb/>&longs;emper &longs;it acutus. </s>

<expan abbr="cumferẽtiam">cumferentiam</expan> deſcribere: eſt <lb/>enim angulus FCE ſemper <lb/>obtuſus, cùm angulus DCF <lb/>ſemper ſit acutus. </s>

<s id="id.2.1.51.2.1.8.0">quò au<lb/><figure id="id.036.01.070.1.jpg" xlink:href="036/01/070/1.jpg"></figure><lb/>tem pondus in B fuerit leuius, maiorem tamen adhuc circumfe<lb/>rentiam de&longs;cribet. </s>

<s id="id.2.1.51.2.1.9.0">nam quò pondus in G leuius fuerit, eò ma<lb/>gis pondus in G eleuabitur; libraq; GH ad &longs;itum horizonti æqui<lb/>di&longs;tantem propius accedet. </s>

<s id="id.2.1.51.2.1.10.0">quæ omnia ex iis, quæ &longs;upra dixi<lb/>mus, manife&longs;ta &longs;unt. </s>

<lb/>tem pondus in B fuerit leuius, maiorem tamen adhuc circumfe<lb/>rentiam deſcribet. </s>

<s id="id.2.1.51.2.1.9.0">nam quò pondus in G leuius fuerit, eò ma<lb/>gis pondus in G eleuabitur; libraq; GH ad ſitum horizonti æqui<lb/>diſtantem propius accedet. </s>

<s id="id.2.1.51.2.1.10.0">quæ omnia ex iis, quæ ſupra dixi<lb/>mus, manifeſta ſunt. </s>

<s id="id.2.1.51.3.1.1.0">His demonſtratis. </s>

<s id="id.2.1.51.3.1.1.0">His demon&longs;tratis. </s>

<s id="id.2.1.51.3.1.2.0">Manifeſtum eſt, centrum libræ cauſam eſſe <lb/>diuerſitatis effectuum in libra. </s>

<s id="id.2.1.51.3.1.2.0">Manife&longs;tum e&longs;t, centrum libræ cau&longs;am e&longs;&longs;e <lb/>diuer&longs;itatis effectuum in libra. </s>

<s id="id.2.1.51.3.1.3.0">atq; patet omnes Archimedis de <lb/>æqueponderantibus propoſitiones ad hoc pertinentes in omni ſitu <lb/>veras eſſe. </s>

<s id="id.2.1.51.3.1.3.0">atq; patet omnes Archimedis de <lb/>æqueponderantibus propo&longs;itiones ad hoc pertinentes in omni &longs;itu <lb/>veras e&longs;&longs;e. </s>

<s id="id.2.1.51.3.1.4.0">hoc eſt ſiue libra ſit horizonti æquidiſtans, ſiue non: <lb/>dummodo centrum libræ in ipſa ſit libra; quemadmodum ipſe <lb/>conſiderat. </s>

<s id="id.2.1.51.3.1.4.0">hoc e&longs;t &longs;iue libra &longs;it horizonti æquidi&longs;tans, &longs;iue non: <lb/>dummodo centrum libræ in ip&longs;a &longs;it libra; quemadmodum ip&longs;e <lb/>con&longs;iderat. </s>

<s id="id.2.1.51.3.1.5.0">& quamquam libra brachia habeat inæqualia, idem eue<lb/>niet; eodemq; proſus modo oſtendetur, centrum libræ diuerſimo<lb/>dè collocatum varios producere effectus. </s>

<s id="id.2.1.51.3.1.5.0">& quamquam libra brachia habeat inæqualia, idem eue<lb/>niet; eodemq; pro&longs;us modo o&longs;tendetur, centrum libræ diuer&longs;imo<lb/>dè collocatum varios producere effectus. </s>

<s id="id.2.1.51.4.1.1.0">Sit enim libra AB hori<lb/>zonti æquidiſtans; & in AB <lb/>ſint pondera inæqualia, quo <lb/>rum grauitatis centrum ſit <lb/>C: ſuſpendaturq; libra in <lb/>eodem puncto C. </s>

<s id="id.2.1.51.4.1.1.0">Sit enim libra AB hori<lb/>zonti æquidi&longs;tans; & in AB <lb/>&longs;int pondera inæqualia, quo <lb/>rum grauitatis centrum &longs;it <lb/>C: &longs;u&longs;pendaturq; libra in <lb/>eodem puncto C. </s>

<s id="N12094">& mo<lb/>ueatur libra in DE. </s>

<s>& mo<lb/>ueatur libra in DE. </s>

<s id="id.2.1.51.4.1.1.0.a">mani<lb/><arrow.to.target n="note78"></arrow.to.target>fe&longs;tum e&longs;t libram non &longs;o<lb/>lum in DE, &longs;ed in quouis <lb/>alio &longs;itu manere. <figure id="id.036.01.070.2.jpg" xlink:href="036/01/070/2.jpg"></figure></s>

<arrow.to.target n="note78" xlink:type="simple"/>feſtum eſt libram non ſo<lb/>lum in DE, ſed in quouis <lb/>alio ſitu manere. <figure id="id.036.01.070.2.jpg" place="text" xlink:href="036/01/070/2.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.51.6.1.1.0">Sit autem centrum libræ <lb/>AB ſupra C in F; ſitq; <lb/>FC ipſi AB, & horizonti <lb/>perpendicularis: & ſi mo<lb/>ueatur libra in DE, linea <lb/>CF mota erit in FG; quæ <lb/>cùm non ſit horizonti per<lb/>pendicularis, libra DE <arrow.to.target n="note79" xlink:type="simple"/>

<s id="id.2.1.51.6.1.1.0">Sit autem centrum libræ <lb/>AB &longs;upra C in F; &longs;itq; <lb/>FC ip&longs;i AB, & horizonti <lb/>perpendicularis: & &longs;i mo<lb/>ueatur libra in DE, linea <lb/>CF mota erit in FG; quæ <lb/>cùm non &longs;it horizonti per<lb/>pendicularis, libra DE <arrow.to.target n="note79"></arrow.to.target><lb/>deor&longs;um ex parte D moue<lb/>bitur, donec FG in FC <lb/>redeat: atq; tunc libra DE <lb/>in AB erit, in quò &longs;itu <lb/>quoq; manebit. <figure id="id.036.01.071.1.jpg" xlink:href="036/01/071/1.jpg"></figure></s>

<lb/>deorſum ex parte D moue<lb/>bitur, donec FG in FC <lb/>redeat: atq; tunc libra DE <lb/>in AB erit, in quò ſitu <lb/>quoq; manebit. <figure id="id.036.01.071.1.jpg" place="text" xlink:href="036/01/071/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.51.7.1.1.0">Et ſi centrum libræ F <lb/>ſit infra libram; ſitq; mota <lb/>libra in DE; primùm qui<lb/>dem manifeſtum eſt li<lb/>bram in AB manere; in <arrow.to.target n="note80" xlink:type="simple"/>

<s id="id.2.1.51.7.1.1.0">Et &longs;i centrum libræ F <lb/>&longs;it infra libram; &longs;itq; mota <lb/>libra in DE; primùm qui<lb/>dem manife&longs;tum e&longs;t li<lb/>bram in AB manere; in <arrow.to.target n="note80"></arrow.to.target><lb/>DE verò deor&longs;um ex par <lb/>te E moueri: cùm linea <lb/>FG non &longs;it horizonti per<lb/>pendicularis. <figure id="id.036.01.071.2.jpg" xlink:href="036/01/071/2.jpg"></figure></s>

<lb/>DE verò deorſum ex par <lb/>te E moueri: cùm linea <lb/>FG non ſit horizonti per<lb/>pendicularis. <figure id="id.036.01.071.2.jpg" place="text" xlink:href="036/01/071/2.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.51.8.1.1.0">Ex his determinatis ſi libra ſit <lb/>arcuata, vel libræ brachia angulum <lb/>conſtituant; centrumq; diuerſimo<lb/>dè collocetur (quamquam hæc pro<lb/>priè non ſit libra) varios tamen <lb/>huius quoq; effectus oſtendere pote<lb/>rimus. </s>

<s id="id.2.1.51.8.1.1.0">Ex his determinatis &longs;i libra &longs;it <lb/>arcuata, vel libræ brachia angulum <lb/>con&longs;tituant; centrumq; diuer&longs;imo<lb/>dè collocetur (quamquam hæc pro<lb/>priè non &longs;it libra) varios tamen <lb/>huius quoq; effectus o&longs;tendere pote<lb/>rimus. </s>

<s id="id.2.1.51.8.1.2.0">Vt ſit libra ACB, cuius <lb/>centrum, circa quod vertitur, ſit C. <lb/>

<s id="id.2.1.51.8.1.2.0">Vt &longs;it libra ACB, cuius <lb/>centrum, circa quod vertitur, &longs;it C. <lb/></s>

</s>

<s>ductaq; AB, &longs;it arcus &longs;iue angulus <lb/><figure id="id.036.01.071.3.jpg" xlink:href="036/01/071/3.jpg"></figure><lb/>ACB &longs;upra lineam AB; & in AB grauitatis centra ponderum <lb/>ponantur, quæ in hoc &longs;itu maneant. </s>

<s id="N12109">ductaq; AB, ſit arcus ſiue angulus <lb/>

<s id="id.2.1.51.8.1.3.0">moueatur deinde libra ab <pb xlink:href="036/01/072.jpg"/>hoc &longs;itu, putá in ECF. </s>

<s id="id.2.1.51.8.1.3.0.a">Dico li<lb/>bram ECF in ACB redire. </s>

<lb/>ACB ſupra lineam AB; & in AB grauitatis centra ponderum <lb/>ponantur, quæ in hoc ſitu maneant. </s>

<s id="id.2.1.51.8.1.4.0">to<lb/>tius magnitudinis centrum grauita<lb/>tis inueniatur D. </s>

<s id="id.2.1.51.8.1.3.0">moueatur deinde libra ab <pb xlink:href="036/01/072.jpg" xlink:type="simple"/>hoc ſitu, putá in ECF. </s>

<s>& CD iunga<lb/>tur. </s>

<s id="id.2.1.51.8.1.3.0.a">Dico li<lb/>bram ECF in ACB redire. </s>

<s id="id.2.1.51.8.1.5.0">Quoniam enim pondera AB <lb/><arrow.to.target n="note81"></arrow.to.target>manent, linea CD horizonti per<lb/>pendicularis erit. </s>

<s id="id.2.1.51.8.1.4.0">to<lb/>tius magnitudinis centrum grauita<lb/>tis inueniatur D. </s>

<s id="id.2.1.51.8.1.6.0">quando igitur <lb/>libra erit in ECF, linea CD erit <lb/>putá in CG; quæ cùm non &longs;it ho<lb/><figure id="id.036.01.072.1.jpg" xlink:href="036/01/072/1.jpg"></figure><lb/>rizonti perpendicularis; libra ECF in ACB redibit. </s>

<s id="N12128">& CD iunga<lb/>tur. </s>

<s id="id.2.1.51.8.1.7.0">quod idem <lb/>eueniet, &longs;i centrum C &longs;upra libram con&longs;tituatur, vt in H. </s>

<s id="id.2.1.51.8.1.5.0">Quoniam enim pondera AB <lb/>

<arrow.to.target n="note81" xlink:type="simple"/>manent, linea CD horizonti per<lb/>pendicularis erit. </s>

<s id="id.2.1.51.8.1.6.0">quando igitur <lb/>libra erit in ECF, linea CD erit <lb/>putá in CG; quæ cùm non ſit ho<lb/>

<lb/>rizonti perpendicularis; libra ECF in ACB redibit. </s>

<s id="id.2.1.51.8.1.7.0">quod idem <lb/>eueniet, ſi centrum C ſupra libram conſtituatur, vt in H. </s>

<s id="id.2.1.52.1.1.1.0"><margin.target id="note78"></margin.target><emph type="italics"/>Per def. <expan abbr="c&etilde;tri">centri</expan> grauitatis. <emph.end type="italics"/></s>

<margin.target id="note78"/>

<s id="id.2.1.52.1.1.2.0"><margin.target id="note79"></margin.target>1 <emph type="italics"/>Huius. <emph.end type="italics"/></s>

<emph type="italics"/>Per def. <expan abbr="cẽtri">centri</expan> grauitatis. <emph.end type="italics"/>

<s id="id.2.1.52.1.1.3.0"><margin.target id="note80"></margin.target>1. <emph type="italics"/>Huius. <emph.end type="italics"/></s>

</s>

<s id="id.2.1.52.1.1.4.0"><margin.target id="note81"></margin.target>1 <emph type="italics"/>Huius. <emph.end type="italics"/></s>

<margin.target id="note79"/>1 <emph type="italics"/>Huius. <emph.end type="italics"/>

</s>

<margin.target id="note80"/>1. <emph type="italics"/>Huius. <emph.end type="italics"/>

</s>

<margin.target id="note81"/>1 <emph type="italics"/>Huius. <emph.end type="italics"/>

</s>

<s id="id.2.1.53.1.1.1.0">Si verò arcus, ſiue angulus <lb/>ACB, ſit infra lineam AB; eo <lb/>dem modo libram ECF, cuius <lb/>centrum, ſiue ſit in C, ſiue in H, <lb/>deorſum ex parte F moueri o<lb/>ſtendemus. <figure id="id.036.01.072.2.jpg" place="text" xlink:href="036/01/072/2.jpg" xlink:type="simple"/>

<s id="id.2.1.53.1.1.1.0">Si verò arcus, &longs;iue angulus <lb/>ACB, &longs;it infra lineam AB; eo <lb/>dem modo libram ECF, cuius <lb/>centrum, &longs;iue &longs;it in C, &longs;iue in H, <lb/>deor&longs;um ex parte F moueri o<lb/>&longs;tendemus. <figure id="id.036.01.072.2.jpg" xlink:href="036/01/072/2.jpg"></figure><figure id="id.036.01.072.3.jpg" xlink:href="036/01/072/3.jpg"></figure></s>

</s>

<s id="id.2.1.53.2.1.1.0">Sit autem angulus ACB ſupra lineam AB; ac libræ centrum <lb/>ſit H; lineaq; CH libram ſuſtineat; & moueatur libra in EKF: <lb/>libra EkF in ACB redibit. </s>

<s id="id.2.1.53.2.1.1.0">Sit autem angulus ACB &longs;upra lineam AB; ac libræ centrum <lb/>&longs;it H; lineaq; CH libram &longs;u&longs;tineat; & moueatur libra in EKF: <lb/>libra EkF in ACB redibit. </s>

<s id="id.2.1.53.4.1.1.0">Si verò centrum libræ ſit D, quocunq; modo moueatur libra; <lb/>vbi relinquetur, manebit. </s>

<s id="id.2.1.53.4.1.1.0">Si verò centrum libræ &longs;it D, quocunq; modo moueatur libra; <lb/>vbi relinquetur, manebit. </s>

<s id="id.2.1.53.5.1.1.0">Si deinde punctum H ſit infra lineam AB; tunc libra EkF <lb/>deorſum ex parte F mouebitur. </s>

<s id="id.2.1.53.5.1.1.0">Si deinde punctum H &longs;it infra lineam AB; tunc libra EkF <lb/>deor&longs;um ex parte F mouebitur. </s>

<s id="id.2.1.53.6.1.1.0">Similiq; prorſus ratione, ſi an<lb/>gulus ACB ſit infra lineam AB; <lb/>ſitq; libræ centrum H; ſuſtineaturq; <lb/>libra linea CH; ſi libra ab hoc mo<lb/>ueatur ſitu, deorſum ex parte pon<lb/>deris inferioris mouebitur. </s>

<s id="id.2.1.53.6.1.1.0">Similiq; pror&longs;us ratione, &longs;i an<lb/>gulus ACB &longs;it infra lineam AB; <lb/>&longs;itq; libræ centrum H; &longs;u&longs;tineaturq; <lb/>libra linea CH; &longs;i libra ab hoc mo<lb/>ueatur &longs;itu, deor&longs;um ex parte pon<lb/>deris inferioris mouebitur. </s>

<s id="id.2.1.53.6.1.2.0">& ſi cen<lb/>trum libræ ſit D; vbi relinquetur, <lb/>manebit. </s>

<s id="id.2.1.53.6.1.2.0">& &longs;i cen<lb/>trum libræ &longs;it D; vbi relinquetur, <lb/>manebit. </s>

<s id="id.2.1.53.6.1.3.0">&longs;i verò &longs;it in K; &longs;i ab eiu&longs; <lb/><figure id="id.036.01.073.1.jpg" xlink:href="036/01/073/1.jpg"></figure><lb/>modi moueatur &longs;itu, in eundem pro&longs;us redibit. </s>

<s id="id.2.1.53.6.1.4.0">quæ omnia ex iis, <lb/>quæ in principio diximus, &longs;unt manife&longs;ta. </s>

<lb/>modi moueatur ſitu, in eundem proſus redibit. </s>

<s id="id.2.1.53.6.1.5.0">&longs;imiliter &longs;i centrum li<lb/>bræ, vel in altero brachiorum, vel intra, vel extra vtcunq; po<lb/>natur; eadem inueniemus. </s>

<s id="id.2.1.53.6.1.4.0">quæ omnia ex iis, <lb/>quæ in principio diximus, ſunt manifeſta. </s>

<s id="id.2.1.53.6.1.5.0">ſimiliter ſi centrum li<lb/>bræ, vel in altero brachiorum, vel intra, vel extra vtcunq; po<lb/>natur; eadem inueniemus. </s>

<s id="id.2.1.53.8.1.1.0">PROPOSITIO. V. </s>

<s id="id.2.1.53.9.1.1.0">Duo pondera in libra appenſa, ſi libra inter <lb/>hæc ita diuidatur, vt partes ponderibus per<lb/>mutatim reſpondeant; tàm in punctis appenſis <lb/>ponderabunt, quàm ſi vtraq; ex diuiſionis pun<lb/>cto ſuſpendantur. <figure id="id.036.01.074.1.jpg" place="text" xlink:href="036/01/074/1.jpg" xlink:type="simple"/>

<s id="id.2.1.53.9.1.1.0">Duo pondera in libra appen&longs;a, &longs;i libra inter <lb/>hæc ita diuidatur, vt partes ponderibus per<lb/>mutatim re&longs;pondeant; tàm in punctis appen&longs;is <lb/>ponderabunt, quàm &longs;i vtraq; ex diui&longs;ionis pun<lb/>cto &longs;u&longs;pendantur. <figure id="id.036.01.074.1.jpg" xlink:href="036/01/074/1.jpg"></figure></s>

</s>

<s id="id.2.1.53.10.1.1.0">Sit AB libra, cuius centrum C; ſintq; duo pondera EF ex pun<lb/>ctis BG ſuſpenſa: diuidaturq; BG in H, ita vt BH ad HG <lb/>eandem habeat proportionem, quam pondus E ad pondus F. </s>

<s id="id.2.1.53.10.1.1.0">Sit AB libra, cuius centrum C; &longs;intq; duo pondera EF ex pun<lb/>ctis BG &longs;u&longs;pen&longs;a: diuidaturq; BG in H, ita vt BH ad HG <lb/>eandem habeat proportionem, quam pondus E ad pondus F. </s>

<s id="id.2.1.53.10.1.1.0.a"><lb/>Dico pondera EF tàm in BG ponderare, quàm &longs;i vtraq; ex pun<lb/>cto H &longs;u&longs;pendantur. </s>

<lb/>Dico pondera EF tàm in BG ponderare, quàm ſi vtraq; ex pun<lb/>cto H ſuſpendantur. </s>

<s id="id.2.1.53.10.1.2.0">fiat AC ip&longs;i CH æqualis. </s>

<s id="id.2.1.53.10.1.2.0">fiat AC ipſi CH æqualis. </s>

<s id="id.2.1.53.10.1.3.0">& vt AC ad <lb/>CG, ita fiat pondus E ad pondus L. </s>

<s id="N12212">ſimiliter vt AC ad CB, <lb/>ita fiat pondus F ad pondus M. </s>

<s>&longs;imiliter vt AC ad CB, <lb/>ita fiat pondus F ad pondus M. </s>

<s id="N12216">ponderaq; LM ex puncto A ſu<lb/>ſpendantur. </s>

<s>ponderaq; LM ex puncto A &longs;u<lb/>&longs;pendantur. </s>

<s id="id.2.1.53.10.1.4.0">Quoniam enim AC eſt æqualis CH, erit BC ad <lb/>CH vt pondus M ad pondus F. </s>

<s id="id.2.1.53.10.1.4.0">Quoniam enim AC e&longs;t æqualis CH, erit BC ad <lb/>CH vt pondus M ad pondus F. </s>

<s id="id.2.1.53.10.1.4.0.a">& quoniam maior eſt BC, <lb/>quàm CH; erit & pondus M ipſo F maius. </s>

<s id="id.2.1.53.10.1.4.0.a">& quoniam maior e&longs;t BC, <lb/>quàm CH; erit & pondus M ip&longs;o F maius. </s>

<s id="id.2.1.53.10.1.5.0">diuidatur igitur pon<lb/>dus M in duas partes QR, ſitq; pars Q ipſi F æqualis; erit BC <lb/>

<s id="id.2.1.53.10.1.5.0">diuidatur igitur pon<lb/>dus M in duas partes QR, &longs;itq; pars Q ip&longs;i F æqualis; erit BC <lb/><arrow.to.target n="note82"></arrow.to.target>ad CH, vt RQ ad Q: & diuidendo, vt BH ad HC, ita R ad q. <lb/><arrow.to.target n="note83"></arrow.to.target>deinde conuertendo, vt CH ad HB, ita Q ad R. </s>

<arrow.to.target n="note82" xlink:type="simple"/>ad CH, vt RQ ad Q: & diuidendo, vt BH ad HC, ita R ad q. <lb/>

<s id="id.2.1.53.10.1.5.0.a">Præterea quo<lb/>niam CH e&longs;t æqualis ip&longs;i CA, erit HC ad CG, vt pondus <lb/>E ad pondus L: maior autem e&longs;t HC, quàm CG; erit & pon<pb n="31" xlink:href="036/01/075.jpg"/>dus E pondere L maius. </s>

<arrow.to.target n="note83" xlink:type="simple"/>deinde conuertendo, vt CH ad HB, ita Q ad R. </s>

<s id="id.2.1.53.10.1.6.0">diuidatur itaq; pondus E in duas partes <lb/>NO ita, vt pars O &longs;it ip&longs;i L æqualis, erit HC ad CG, vt to<lb/>tum NO ad O; & diuidendo, vt HG ad GC, ita N ad O: <arrow.to.target n="note84"></arrow.to.target><lb/>conuertendoq; vt CG ad GH, ita O ad N. </s>

<s id="id.2.1.53.10.1.5.0.a">Præterea quo<lb/>niam CH eſt æqualis ipſi CA, erit HC ad CG, vt pondus <lb/>E ad pondus L: maior autem eſt HC, quàm CG; erit & pon<pb n="31" xlink:href="036/01/075.jpg" xlink:type="simple"/>dus E pondere L maius. </s>

<s>& iterum com<lb/>ponendo, vt CH ad HG, ita ON ad N. </s>

<s id="id.2.1.53.10.1.6.0">diuidatur itaq; pondus E in duas partes <lb/>NO ita, vt pars O ſit ipſi L æqualis, erit HC ad CG, vt to<lb/>tum NO ad O; & diuidendo, vt HG ad GC, ita N ad O: <arrow.to.target n="note84" xlink:type="simple"/>

<s>vt autem GH <arrow.to.target n="note85"></arrow.to.target><lb/>ad HB, ita e&longs;t F ad ON. </s>

<lb/>conuertendoq; vt CG ad GH, ita O ad N. </s>

<s>quare ex æquali, vt CH ad HB, ita F <arrow.to.target n="note86"></arrow.to.target><lb/>ad N. &longs;ed vt CH ad HB ita e&longs;t Q ad R: erit igitur Q ad R, vt <arrow.to.target n="note87"></arrow.to.target><lb/>F ad N; & permutando, vt Q ad F, ita R ad N. </s>

<s id="N1224B">& iterum com<lb/>ponendo, vt CH ad HG, ita ON ad N. </s>

<s>e&longs;t autem pars <arrow.to.target n="note88"></arrow.to.target><lb/>Q ip&longs;i F æqualis; quare & pars R ip&longs;i N æqualis erit. </s>

<s id="N1224F">vt autem GH <arrow.to.target n="note85" xlink:type="simple"/>

<s id="id.2.1.53.10.1.7.0">Itaq; cùm <lb/>pondus L &longs;it ip&longs;i O æquale, & pondus F ip&longs;i Q etiam æquale, atq; <lb/>pars R ip&longs;i N æqualis; erunt pondera LM ip&longs;is EF ponderibus <lb/>æqualia. </s>

<s id="id.2.1.53.10.1.8.0">& quoniam e&longs;t, vt AC ad CG, ita pondus E ad pon<lb/>dus L; pondera EL æqueponderabunt. </s>

<s id="N12256">quare ex æquali, vt CH ad HB, ita F <arrow.to.target n="note86" xlink:type="simple"/>

<s id="id.2.1.53.10.1.9.0">&longs;imiliter quoniam e&longs;t, vt <arrow.to.target n="note89"></arrow.to.target><lb/>AC ad CB, ita <expan abbr="pundus">pondus</expan> F ad pondus M; pondera quoq; FM <lb/>æqueponderabunt. </s>

<lb/>ad N. ſed vt CH ad HB ita eſt Q ad R: erit igitur Q ad R, vt <arrow.to.target n="note87" xlink:type="simple"/>

<s id="id.2.1.53.10.1.10.0">Pondera igitur LM ponderibus EF in BG <arrow.to.target n="note90"></arrow.to.target><lb/>appen&longs;is æqueponderabunt. </s>

<lb/>F ad N; & permutando, vt Q ad F, ita R ad N. </s>

<s id="id.2.1.53.10.1.11.0">cùm autem di&longs;tantia CA æqualis &longs;it <lb/>di&longs;tantiæ CH; &longs;i igitur vtraq; pondera EF in H appendantur, <lb/>pondera LM ip&longs;is EF ponderibus in H appen&longs;is æquepondera<lb/>bunt. </s>

<s id="N12262">eſt autem pars <arrow.to.target n="note88" xlink:type="simple"/>

<s id="id.2.1.53.10.1.12.0">&longs;ed LM ip&longs;is EF in GB quoq; æqueponderant: æquè <arrow.to.target n="note91"></arrow.to.target><lb/>igitur grauia erunt pondera EF in GB, vt in H appen&longs;a. </s>

<lb/>Q ipſi F æqualis; quare & pars R ipſi N æqualis erit. </s>

<s id="id.2.1.53.10.1.13.0">tàm igi<lb/>tur ponderabunt in BG, quàm in H appen&longs;a. <figure id="id.036.01.075.1.jpg" xlink:href="036/01/075/1.jpg"></figure></s>

<s id="id.2.1.53.10.1.7.0">Itaq; cùm <lb/>pondus L ſit ipſi O æquale, & pondus F ipſi Q etiam æquale, atq; <lb/>pars R ipſi N æqualis; erunt pondera LM ipſis EF ponderibus <lb/>æqualia. </s>

<s id="id.2.1.53.10.1.8.0">& quoniam eſt, vt AC ad CG, ita pondus E ad pon<lb/>dus L; pondera EL æqueponderabunt. </s>

<s id="id.2.1.53.10.1.9.0">ſimiliter quoniam eſt, vt <arrow.to.target n="note89" xlink:type="simple"/>

<lb/>AC ad CB, ita <expan abbr="pundus">pondus</expan> F ad pondus M; pondera quoq; FM <lb/>æqueponderabunt. </s>

<s id="id.2.1.53.10.1.10.0">Pondera igitur LM ponderibus EF in BG <arrow.to.target n="note90" xlink:type="simple"/>

<lb/>appenſis æqueponderabunt. </s>

<s id="id.2.1.53.10.1.11.0">cùm autem diſtantia CA æqualis ſit <lb/>diſtantiæ CH; ſi igitur vtraq; pondera EF in H appendantur, <lb/>pondera LM ipſis EF ponderibus in H appenſis æquepondera<lb/>bunt. </s>

<s id="id.2.1.53.10.1.12.0">ſed LM ipſis EF in GB quoq; æqueponderant: æquè <arrow.to.target n="note91" xlink:type="simple"/>

<lb/>igitur grauia erunt pondera EF in GB, vt in H appenſa. </s>

<s id="id.2.1.53.10.1.13.0">tàm igi<lb/>tur ponderabunt in BG, quàm in H appenſa. <figure id="id.036.01.075.1.jpg" place="text" xlink:href="036/01/075/1.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.53.11.1.1.0">Sint autem pondera EF in CB appenſa; ſitq; C libræ centrum; <lb/>& diuidatur CB in H, ita vt CH ad HB ſit, vt pondus in F ad <lb/>E. </s>

<s id="id.2.1.53.11.1.1.0">Sint autem pondera EF in CB appen&longs;a; &longs;itq; C libræ centrum; <lb/>& diuidatur CB in H, ita vt CH ad HB &longs;it, vt pondus in F ad <lb/>E. </s>

<s id="id.2.1.53.11.1.1.0.a">Dico pondera EF tàm in CB ponderare, quàm in puncto H. </s>

<s id="id.2.1.53.11.1.1.0.b"><lb/>fiat CA ip&longs;i CH æqualis, & vt CA ad CB, ita fiat pondus F ad <lb/>aliud D, quod appendatur in A. </s>

<lb/>fiat CA ipſi CH æqualis, & vt CA ad CB, ita fiat pondus F ad <lb/>aliud D, quod appendatur in A. </s>

<s id="id.2.1.53.11.1.1.0.c">Quoniam enim CH e&longs;t æqua<pb xlink:href="036/01/076.jpg"/><figure id="id.036.01.076.1.jpg" xlink:href="036/01/076/1.jpg"></figure><lb/>lis CA, erit CH ad CB, vt F ad D; & maior quidem e&longs;t CB, <lb/>quàm CH; idcirco D pondere F maius erit. </s>

<s id="id.2.1.53.11.1.1.0.c">Quoniam enim CH eſt æqua<pb xlink:href="036/01/076.jpg" xlink:type="simple"/>

<s id="id.2.1.53.11.1.2.0">Diuidatur ergo D <lb/>in duas partes Gk, &longs;itq; G ip&longs;i F æqualis; erit vt BC ad CH, <lb/>vt Gk ad G; & diuidendo, vt BH ad HC, ita K ad G; & conuer<lb/><arrow.to.target n="note92"></arrow.to.target>tendo, vt CH ad HB, ita G ad k. </s>

<s id="id.2.1.53.11.1.3.0">Vt autem CH ad HB, ita e&longs;t <lb/><arrow.to.target n="note93"></arrow.to.target>F ad E. </s>

<lb/>lis CA, erit CH ad CB, vt F ad D; & maior quidem eſt CB, <lb/>quàm CH; idcirco D pondere F maius erit. </s>

<s>vt igitur G ad k, ita e&longs;t F ad E; & permutando vt G <lb/><arrow.to.target n="note94"></arrow.to.target>ad F, ita k ad E. </s>

<s id="id.2.1.53.11.1.2.0">Diuidatur ergo D <lb/>in duas partes Gk, ſitq; G ipſi F æqualis; erit vt BC ad CH, <lb/>vt Gk ad G; & diuidendo, vt BH ad HC, ita K ad G; & conuer<lb/>

<s>&longs;unt autem GF æqualia; erunt & kE inter &longs;e <lb/>&longs;e æqualia. </s>

<arrow.to.target n="note92" xlink:type="simple"/>tendo, vt CH ad HB, ita G ad k. </s>

<s id="id.2.1.53.11.1.4.0">cùm itaq; pars G &longs;it ip&longs;i F æqualis, & K ip&longs;i E; erit <lb/>totum C k ip&longs;is EF ponderibus æquale. </s>

<s id="id.2.1.53.11.1.3.0">Vt autem CH ad HB, ita eſt <lb/>

<s id="id.2.1.53.11.1.5.0">& quoniam AC e&longs;t ip<lb/>&longs;i CH æqualis; &longs;i igitur pondera EF ex puncto H &longs;u&longs;pendantur, <lb/>pondus D ip&longs;is EF in H appen&longs;is æqueponderabit. </s>

<arrow.to.target n="note93" xlink:type="simple"/>F ad E. </s>

<s id="id.2.1.53.11.1.6.0">&longs;ed & ip&longs;is <lb/>æqueponderat in CB, hoc e&longs;t F in B, & E in C; cùm &longs;it vt AC <lb/>ad CB, ita F ad. D. </s>

<s id="N122DE">vt igitur G ad k, ita eſt F ad E; & permutando vt G <lb/>

<s id="id.2.1.53.11.1.7.0">pondus enim E ex centro libræ C &longs;u&longs;pen<lb/>&longs;um non efficit, vt libra in alterutram moueatur partem. </s>

<arrow.to.target n="note94" xlink:type="simple"/>ad F, ita k ad E. </s>

<s id="id.2.1.53.11.1.8.0">tàm igi<lb/>tur grauia erunt pondera EF in CB, quàm in H appen&longs;a. <pb n="32" xlink:href="036/01/077.jpg"/><figure id="id.036.01.077.1.jpg" xlink:href="036/01/077/1.jpg"></figure></s>

<s id="N122E5">ſunt autem GF æqualia; erunt & kE inter ſe <lb/>ſe æqualia. </s>

<s id="id.2.1.53.11.1.4.0">cùm itaq; pars G ſit ipſi F æqualis, & K ipſi E; erit <lb/>totum C k ipſis EF ponderibus æquale. </s>

<s id="id.2.1.53.11.1.5.0">& quoniam AC eſt ip<lb/>ſi CH æqualis; ſi igitur pondera EF ex puncto H ſuſpendantur, <lb/>pondus D ipſis EF in H appenſis æqueponderabit. </s>

<s id="id.2.1.53.11.1.6.0">ſed & ipſis <lb/>æqueponderat in CB, hoc eſt F in B, & E in C; cùm ſit vt AC <lb/>ad CB, ita F ad. D. </s>

<s id="id.2.1.53.11.1.7.0">pondus enim E ex centro libræ C ſuſpen<lb/>ſum non efficit, vt libra in alterutram moueatur partem. </s>

<s id="id.2.1.53.11.1.8.0">tàm igi<lb/>tur grauia erunt pondera EF in CB, quàm in H appenſa. <pb n="32" xlink:href="036/01/077.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.53.12.1.1.0">Sit deniq; libra AB, & ex punctis AB ſuſpenſa ſint pondera <lb/>EF; ſitq; centrum libræ C intra pondera; diuidaturq; AB in <lb/>D, ita vt AD ad DB ſit, vt pondus F ad pondus E. </s>

<s id="id.2.1.53.12.1.1.0">Sit deniq; libra AB, & ex punctis AB &longs;u&longs;pen&longs;a &longs;int pondera <lb/>EF; &longs;itq; centrum libræ C intra pondera; diuidaturq; AB in <lb/>D, ita vt AD ad DB &longs;it, vt pondus F ad pondus E. </s>

<s id="id.2.1.53.12.1.1.0.a">Dico pon<lb/>dera EF tàm in AB ponderare, quám ſi vtraq; ex puncto D ſuſpen<lb/>dantur. </s>

<s id="id.2.1.53.12.1.1.0.a">Dico pon<lb/>dera EF tàm in AB ponderare, quám &longs;i vtraq; ex puncto D &longs;u&longs;pen<lb/>dantur. </s>

<s id="id.2.1.53.12.1.2.0">fiat CG æqualis ipſi CD; & vt DC ad CA, ita fiat <lb/>pondus E ad aliud H; quod appendatur in D. vt autem GC ad <lb/>CB, ita fiat pondus F ad aliud K; appendaturq; k in G. </s>

<s id="id.2.1.53.12.1.2.0">fiat CG æqualis ip&longs;i CD; & vt DC ad CA, ita fiat <lb/>pondus E ad aliud H; quod appendatur in D. vt autem GC ad <lb/>CB, ita fiat pondus F ad aliud K; appendaturq; k in G. </s>

<s id="id.2.1.53.12.1.2.0.a"><expan abbr="Quoniã">Quoniam</expan> enim <lb/>e&longs;t, vt BC ad CG, hoc e&longs;t ad CD, ita pondus k ad F; erit K ma <lb/>ius pondere F. </s>

<expan abbr="Quoniã">Quoniam</expan> enim <lb/>eſt, vt BC ad CG, hoc eſt ad CD, ita pondus k ad F; erit K ma <lb/>ius pondere F. </s>

<s>quare diuidatur pondus k in L, & MN; fiatq; <lb/>pars L ip&longs;i F æqualis; erit vt BC ad CD, vt totum LMN ad <lb/>L; & diuidendo, vt BD ad DC, ita pars MN ad partem L. </s>

<s id="N12331">quare diuidatur pondus k in L, & MN; fiatq; <lb/>pars L ipſi F æqualis; erit vt BC ad CD, vt totum LMN ad <lb/>L; & diuidendo, vt BD ad DC, ita pars MN ad partem L. </s>

<s>vt <arrow.to.target n="note95"></arrow.to.target><lb/>igitur BD ad DC, ita pars MN ad F. </s>

<s>vt autem AD ad DB, <lb/>ita F ad E: quare ex æquali, vt AD ad DC, ita MN ad E. </s>

<lb/>igitur BD ad DC, ita pars MN ad F. </s>

<s>cùm <arrow.to.target n="note96"></arrow.to.target><lb/>verò AD &longs;it ip&longs;a CD maior; erit & pars MN pondere E <lb/>maior: diuidatur ergo MN in duas partes MN, &longs;itq; M æqua <lb/>lis ip&longs;i E. </s>

<s id="N1233E">vt autem AD ad DB, <lb/>ita F ad E: quare ex æquali, vt AD ad DC, ita MN ad E. </s>

<s>erit vt AD ad DC, vt NM ad M; & diuidendo, vt <arrow.to.target n="note97"></arrow.to.target><lb/>AC ad CD, ita N ad M: conuertendoq; vt DC ad CA, ita M <lb/>ad N. </s>

<s>vt autem DC ad CA, ita e&longs;t E ad H; erit igitur M ad N <arrow.to.target n="note98"></arrow.to.target><lb/>vt E ad H; & permutando, vt M ad E, ita N ad H. </s>

<lb/>verò AD ſit ipſa CD maior; erit & pars MN pondere E <lb/>maior: diuidatur ergo MN in duas partes MN, ſitq; M æqua <lb/>lis ipſi E. </s>

<s>&longs;ed ME <arrow.to.target n="note99"></arrow.to.target><lb/>&longs;unt inter &longs;e æqualia, erunt NH inter &longs;e&longs;e quoq; æqualia. </s>

<s id="N1234D">erit vt AD ad DC, vt NM ad M; & diuidendo, vt <arrow.to.target n="note97" xlink:type="simple"/>

<s id="id.2.1.53.12.1.3.0">& quo<lb/>niam ita e&longs;t AC ad CD, vt H ad E: pondera HE æqueponde<lb/>rabunt. <arrow.to.target n="note100"></arrow.to.target></s>

<lb/>AC ad CD, ita N ad M: conuertendoq; vt DC ad CA, ita M <lb/>ad N. </s>

<s id="id.2.1.53.12.1.4.0">&longs;imiliter quoniam e&longs;t vt GC ad CB, ita F ad k, ponde<pb xlink:href="036/01/078.jpg"/><figure id="id.036.01.078.1.jpg" xlink:href="036/01/078/1.jpg"></figure><lb/><arrow.to.target n="note101"></arrow.to.target>ra etiam kF æqueponderabunt. </s>

<s id="N12356">vt autem DC ad CA, ita eſt E ad H; erit igitur M ad N <arrow.to.target n="note98" xlink:type="simple"/>

<s id="id.2.1.53.12.1.5.0">pondera igitur Ek HF in li<lb/>bra AB, cuius centrum C, æqueponderabunt. </s>

<lb/>vt E ad H; & permutando, vt M ad E, ita N ad H. </s>

<s id="id.2.1.53.12.1.6.0">cùm autem GC <lb/>ip&longs;i CD &longs;it æqualis, & pondus H &longs;it ip&longs;i N æquale; pondera NH <lb/>æqueponderabunt. </s>

<s id="id.2.1.53.12.1.7.0">& quoniam omnia æqueponderant, demptis <lb/><arrow.to.target n="note102"></arrow.to.target>HN ponderibus, quæ æqueponderant, reliqua æqueponderabunt; <lb/>hoc e&longs;t pondera EF & pondus LM ex centro libræ C &longs;u&longs;pen&longs;a. </s>

<lb/>ſunt inter ſe æqualia, erunt NH inter ſeſe quoq; æqualia. </s>

<s id="id.2.1.53.12.1.8.0"><lb/>quia verò pars L ip&longs;i F e&longs;t æqualis, & pars M ip&longs;i E æqualis; erit <lb/>totum LM ip&longs;is FE ponderibus &longs;imul &longs;umptis æquale. </s>

<s id="id.2.1.53.12.1.3.0">& quo<lb/>niam ita eſt AC ad CD, vt H ad E: pondera HE æqueponde<lb/>rabunt. <arrow.to.target n="note100" xlink:type="simple"/>

<s id="id.2.1.53.12.1.9.0">& cùm <lb/>&longs;it CG ip&longs;i CD æqualis, &longs;i igitur pondera EF ex puncto D &longs;u&longs;pen<lb/>dantur, pondera EF in D appen&longs;a ip&longs;i LM æqueponderabunt. </s>

</s>

<s id="id.2.1.53.12.1.10.0">quare <lb/>LM tàm ip&longs;is EF in AB appen&longs;is æqueponderat, quàm in pun<lb/>cto D appen&longs;is. </s>

<s id="id.2.1.53.12.1.4.0">ſimiliter quoniam eſt vt GC ad CB, ita F ad k, ponde<pb xlink:href="036/01/078.jpg" xlink:type="simple"/>

<s id="id.2.1.53.12.1.11.0">libra enim &longs;emper eodem modo manet. </s>

<s id="id.2.1.53.12.1.12.0">Ponde<lb/><arrow.to.target n="note103"></arrow.to.target>ra ergo EF tàm in AB ponderabunt, quàm in puncto D. </s>

<lb/>

<s id="id.2.1.53.12.1.9.0.a">quod <lb/><expan abbr="demon&longs;tre">demonstrare</expan> oportebat. </s>

<arrow.to.target n="note101" xlink:type="simple"/>ra etiam kF æqueponderabunt. </s>

<s id="id.2.1.53.12.1.5.0">pondera igitur Ek HF in li<lb/>bra AB, cuius centrum C, æqueponderabunt. </s>

<s id="id.2.1.53.12.1.6.0">cùm autem GC <lb/>ipſi CD ſit æqualis, & pondus H ſit ipſi N æquale; pondera NH <lb/>æqueponderabunt. </s>

<s id="id.2.1.53.12.1.7.0">& quoniam omnia æqueponderant, demptis <lb/>

<arrow.to.target n="note102" xlink:type="simple"/>HN ponderibus, quæ æqueponderant, reliqua æqueponderabunt; <lb/>hoc eſt pondera EF & pondus LM ex centro libræ C ſuſpenſa. </s>

<lb/>quia verò pars L ipſi F eſt æqualis, & pars M ipſi E æqualis; erit <lb/>totum LM ipſis FE ponderibus ſimul ſumptis æquale. </s>

<s id="id.2.1.53.12.1.9.0">& cùm <lb/>ſit CG ipſi CD æqualis, ſi igitur pondera EF ex puncto D ſuſpen<lb/>dantur, pondera EF in D appenſa ipſi LM æqueponderabunt. </s>

<s id="id.2.1.53.12.1.10.0">quare <lb/>LM tàm ipſis EF in AB appenſis æqueponderat, quàm in pun<lb/>cto D appenſis. </s>

<s id="id.2.1.53.12.1.11.0">libra enim ſemper eodem modo manet. </s>

<s id="id.2.1.53.12.1.12.0">Ponde<lb/>

<arrow.to.target n="note103" xlink:type="simple"/>ra ergo EF tàm in AB ponderabunt, quàm in puncto D. </s>

<expan abbr="demonſtre">demonstrare</expan> oportebat. </s>

<s id="id.2.1.54.1.1.1.0"><margin.target id="note82"></margin.target>17 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note82"/>17 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.2.0"><margin.target id="note83"></margin.target><emph type="italics"/>Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.3.0"><margin.target id="note84"></margin.target>17 <emph type="italics"/>Quinti. </s>

<s id="id.2.1.54.1.1.4.0">Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

<margin.target id="note83"/>

<s id="id.2.1.54.1.1.5.0"><margin.target id="note85"></margin.target>18 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<emph type="italics"/>Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.6.0"><margin.target id="note86"></margin.target>23 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.7.0"><margin.target id="note87"></margin.target>11 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.8.0"><margin.target id="note88"></margin.target>16 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note84"/>17 <emph type="italics"/>Quinti. </s>

<s id="id.2.1.54.1.1.9.0"><margin.target id="note89"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.4.0">Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.11.0"><margin.target id="note90"></margin.target>2 <emph type="italics"/>Com. not. huius.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.14.0"><margin.target id="note91"></margin.target>3 <emph type="italics"/>Com. not. huius.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.16.0"><margin.target id="note92"></margin.target>17 <emph type="italics"/>Quinti. </s>

<margin.target id="note85"/>18 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.17.0">Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.18.0"><margin.target id="note93"></margin.target>11 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.19.0"><margin.target id="note94"></margin.target>16 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note86"/>23 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.20.0"><margin.target id="note95"></margin.target>17 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.21.0"><margin.target id="note96"></margin.target>23 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.22.0"><margin.target id="note97"></margin.target>17 <emph type="italics"/>Quinti. </s>

<margin.target id="note87"/>11 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.23.0">Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.24.0"><margin.target id="note98"></margin.target>11 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.25.0"><margin.target id="note99"></margin.target>16 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note88"/>16 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.26.0"><margin.target id="note100"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.54.1.1.28.0"><margin.target id="note101"></margin.target>2 <emph type="italics"/>Com.not. huius.<emph.end type="italics"/></s>

<s id="id.2.1.54.1.1.30.0"><margin.target id="note102"></margin.target>1 <emph type="italics"/>Com.not. huius.<emph.end type="italics"/></s>

<margin.target id="note89"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

<s id="id.2.1.54.1.1.32.0"><margin.target id="note103"></margin.target>3 <emph type="italics"/>Com.not. huius.<emph.end type="italics"/></s>

</s>

<margin.target id="note90"/>2 <emph type="italics"/>Com. not. huius.<emph.end type="italics"/>

</s>

<margin.target id="note91"/>3 <emph type="italics"/>Com. not. huius.<emph.end type="italics"/>

</s>

<margin.target id="note92"/>17 <emph type="italics"/>Quinti. </s>

<s id="id.2.1.54.1.1.17.0">Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<margin.target id="note93"/>11 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note94"/>16 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note95"/>17 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note96"/>23 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note97"/>17 <emph type="italics"/>Quinti. </s>

<s id="id.2.1.54.1.1.23.0">Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti<emph.end type="italics"/>

</s>

<margin.target id="note98"/>11 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note99"/>16 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note100"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

</s>

<margin.target id="note101"/>2 <emph type="italics"/>Com.not. huius.<emph.end type="italics"/>

</s>

<margin.target id="note102"/>1 <emph type="italics"/>Com.not. huius.<emph.end type="italics"/>

</s>

<margin.target id="note103"/>3 <emph type="italics"/>Com.not. huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.55.1.1.1.0">Hæc autem omnia (mechanicè tamen ma<lb/>gis) aliter oſtendemus. <pb n="33" xlink:href="036/01/079.jpg" xlink:type="simple"/>

<s id="id.2.1.55.1.1.1.0">Hæc autem omnia (mechanicè tamen ma<lb/>gis) aliter o&longs;tendemus. <pb n="33" xlink:href="036/01/079.jpg"/><figure id="id.036.01.079.1.jpg" xlink:href="036/01/079/1.jpg"></figure></s>

</s>

<s id="id.2.1.55.2.1.1.0">Sit libra AB, cuius centrum C; ſintq; vt in primo caſu duo pon<lb/>dera EF ex punctis BG ſuſpenſa: ſitq; GH ad HB, vt pondus <lb/>F ad pondus E. </s>

<s id="id.2.1.55.2.1.1.0">Sit libra AB, cuius centrum C; &longs;intq; vt in primo ca&longs;u duo pon<lb/>dera EF ex punctis BG &longs;u&longs;pen&longs;a: &longs;itq; GH ad HB, vt pondus <lb/>F ad pondus E. </s>

<s id="id.2.1.55.2.1.1.0.a">Dico pondera EF tàm in GB ponderare, quàm <lb/>ſi vtraq; ex diuiſionis puncto H ſuſpendantur. </s>

<s id="id.2.1.55.2.1.1.0.a">Dico pondera EF tàm in GB ponderare, quàm <lb/>&longs;i vtraq; ex diui&longs;ionis puncto H &longs;u&longs;pendantur. </s>

<s id="id.2.1.55.2.1.2.0">Conſtruantur ea <lb/>dem, hoc eſt fiat AC ipſi CH æqualis, & ex puncto A duo ap<lb/>pendantur pondera LM, ita vt pondus E ad pondus L, ſit vt <lb/>CA ad CG; vt autem CB ad CA, ita ſit pondus M ad pondus <lb/>F. </s>

<s id="id.2.1.55.2.1.2.0">Con&longs;truantur ea <lb/>dem, hoc e&longs;t fiat AC ip&longs;i CH æqualis, & ex puncto A duo ap<lb/>pendantur pondera LM, ita vt pondus E ad pondus L, &longs;it vt <lb/>CA ad CG; vt autem CB ad CA, ita &longs;it pondus M ad pondus <lb/>F. </s>

<s id="id.2.1.55.2.1.2.0.a">pondera LM ipſis EF in GB appenſis (vt ſupra dictum eſt) <lb/>æqueponderabunt. </s>

<s id="id.2.1.55.2.1.2.0.a">pondera LM ip&longs;is EF in GB appen&longs;is (vt &longs;upra dictum e&longs;t) <lb/>æqueponderabunt. </s>

<s id="id.2.1.55.2.1.3.0">Sint deinde puncta NO centra grauitatis pon<lb/>derum EF; connectanturq; GN BO; iungaturq; NO, quæ tan<lb/>quam libra erit; quæ etiam efficiat lineas GN BO inter ſe ſe æqui<lb/>diſtantes eſſe; à punctoq; H horizonti perpendicularis ducatur <lb/>HP, quæ NO ſecet in P, atq; ipſis GN BO ſit æquidiſtans. <lb/>

<s id="id.2.1.55.2.1.3.0">Sint deinde puncta NO centra grauitatis pon<lb/>derum EF; connectanturq; GN BO; iungaturq; NO, quæ tan<lb/>quam libra erit; quæ etiam efficiat lineas GN BO inter &longs;e &longs;e æqui<lb/>di&longs;tantes e&longs;&longs;e; à punctoq; H horizonti perpendicularis ducatur <lb/>HP, quæ NO &longs;ecet in P, atq; ip&longs;is GN BO &longs;it æquidi&longs;tans. <lb/></s>

</s>

<s id="id.2.1.55.2.1.3.0.a">deniq; connectatur GO, quæ HP &longs;ecet in R. </s>

<s id="id.2.1.55.2.1.3.0.a">deniq; connectatur GO, quæ HP ſecet in R. </s>

<s id="id.2.1.55.2.1.4.0">Quoniam igitur <lb/>HR e&longs;t lateri BO trianguli GBO æquidi&longs;tans; erit GH ad HB, <lb/>vt GR ad RO. </s>

<s id="id.2.1.55.2.1.4.0">Quoniam igitur <lb/>HR eſt lateri BO trianguli GBO æquidiſtans; erit GH ad HB, <lb/>vt GR ad RO. </s>

<s>&longs;imiliter quoniam RP e&longs;t lateri GN trianguli <arrow.to.target n="note104"></arrow.to.target><lb/>OGN æquidi&longs;tans; erit GR ad RO, vt NP ad PO. </s>

<s id="N12500">ſimiliter quoniam RP eſt lateri GN trianguli <arrow.to.target n="note104" xlink:type="simple"/>

<s>quare <lb/>vt GH ad HB, ita e&longs;t NP ad PO. </s>

<lb/>OGN æquidiſtans; erit GR ad RO, vt NP ad PO. </s>

<s>vt autem GH ad HB, ita <arrow.to.target n="note105"></arrow.to.target><lb/>e&longs;t pondus F ad pondus E; vt igitur NP ad PO, ita e&longs;t pondus <lb/>F ad pondus E. </s>

<s id="N12507">quare <lb/>vt GH ad HB, ita eſt NP ad PO. </s>

<s id="id.2.1.55.2.1.4.0.a">punctum ergo P centrum erit grauitatis magni<lb/>tudinis ex vtri&longs;q; EF ponderibus compo&longs;itæ. </s>

<s id="N1250B">vt autem GH ad HB, ita <arrow.to.target n="note105" xlink:type="simple"/>

<s id="id.2.1.55.2.1.5.0">Intelligantur itaq; <arrow.to.target n="note106"></arrow.to.target><lb/>pondera EF ita e&longs;&longs;e à libra NO connexa, ac &longs;i vna tantùm e&longs;&longs;et <lb/>magnitudo ex vtri&longs;q; EF compo&longs;ita, in puncti&longs;q; BG appen&longs;a. </s>

<lb/>eſt pondus F ad pondus E; vt igitur NP ad PO, ita eſt pondus <lb/>F ad pondus E. </s>

<s id="id.2.1.55.2.1.6.0">&longs;i <lb/>igitur ponderum &longs;u&longs;pen&longs;iones BG &longs;oluantur, manebunt pondera <arrow.to.target n="note107"></arrow.to.target><lb/>EF ex HP &longs;u&longs;pen&longs;a; &longs;icuti in GB prius manebant. </s>

<s id="id.2.1.55.2.1.4.0.a">punctum ergo P centrum erit grauitatis magni<lb/>tudinis ex vtriſq; EF ponderibus compoſitæ. </s>

<s id="id.2.1.55.2.1.7.0">pondera verò EF <lb/>in GB appen&longs;a ip&longs;is LM ponderibus æqueponderant, & pondera <pb xlink:href="036/01/080.jpg"/><figure id="id.036.01.080.1.jpg" xlink:href="036/01/080/1.jpg"></figure><lb/>EF ex puncto H &longs;u&longs;pen&longs;a, eandem habent con&longs;titutionem ad li<lb/>bram AB, quam in BG appen&longs;a: eadem ergo pondera EF ex <lb/>H &longs;u&longs;pen&longs;a ei&longs;dem ponderibus LM æqueponderabunt. </s>

<s id="id.2.1.55.2.1.5.0">Intelligantur itaq; <arrow.to.target n="note106" xlink:type="simple"/>

<s id="id.2.1.55.2.1.8.0">æquè igi<lb/>tur &longs;unt grauia pondera EF in GB, vt in H appen&longs;a. <figure id="id.036.01.080.2.jpg" xlink:href="036/01/080/2.jpg"></figure></s>

<lb/>pondera EF ita eſſe à libra NO connexa, ac ſi vna tantùm eſſet <lb/>magnitudo ex vtriſq; EF compoſita, in punctiſq; BG appenſa. </s>

<s id="id.2.1.55.2.1.6.0">ſi <lb/>igitur ponderum ſuſpenſiones BG ſoluantur, manebunt pondera <arrow.to.target n="note107" xlink:type="simple"/>

<lb/>EF ex HP ſuſpenſa; ſicuti in GB prius manebant. </s>

<s id="id.2.1.55.2.1.7.0">pondera verò EF <lb/>in GB appenſa ipſis LM ponderibus æqueponderant, & pondera <pb xlink:href="036/01/080.jpg" xlink:type="simple"/>

<lb/>EF ex puncto H ſuſpenſa, eandem habent conſtitutionem ad li<lb/>bram AB, quam in BG appenſa: eadem ergo pondera EF ex <lb/>H ſuſpenſa eiſdem ponderibus LM æqueponderabunt. </s>

<s id="id.2.1.55.2.1.8.0">æquè igi<lb/>tur ſunt grauia pondera EF in GB, vt in H appenſa. <figure id="id.036.01.080.2.jpg" place="text" xlink:href="036/01/080/2.jpg" xlink:type="simple"/>

</s>

<s id="id.2.1.55.3.1.1.0">Similiter demonſtrabitur, pondera EF in quibuſcunq; aliis pun<lb/>ctis appenſa tàm <expan abbr="põderare">ponderare</expan>, quàm ſi vtraq; ex diuiſionis puncto H ſu<lb/>ſpendantur. </s>

<s id="id.2.1.55.3.1.1.0">Similiter demon&longs;trabitur, pondera EF in quibu&longs;cunq; aliis pun<lb/>ctis appen&longs;a tàm <expan abbr="põderare">ponderare</expan>, quàm &longs;i vtraq; ex diui&longs;ionis puncto H &longs;u<lb/>&longs;pendantur. </s>

<s id="id.2.1.55.3.1.2.0">ſi enim (vt ſupra docuimus) in libra pondera inue<lb/>niantur, quibus pondera EF æqueponderent; eadem pondera EF <lb/>ex H ſuſpenſa eiſdem inuentis ponderibus æqueponderabunt; cùm <lb/>punctum P ſit ſemper eorum centrum grauitatis; & HP horizon <lb/>ri perpendicularis. </s>

<s id="id.2.1.55.3.1.2.0">&longs;i enim (vt &longs;upra docuimus) in libra pondera inue<lb/>niantur, quibus pondera EF æqueponderent; eadem pondera EF <lb/>ex H &longs;u&longs;pen&longs;a ei&longs;dem inuentis ponderibus æqueponderabunt; cùm <lb/>punctum P &longs;it &longs;emper eorum centrum grauitatis; & HP horizon <lb/>ri perpendicularis. </s>

<s id="id.2.1.56.1.1.1.0"><margin.target id="note104"></margin.target>2 <emph type="italics"/>Sexti.<emph.end type="italics"/></s>

<margin.target id="note104"/>2 <emph type="italics"/>Sexti.<emph.end type="italics"/>

<s id="id.2.1.56.1.1.2.0"><margin.target id="note105"></margin.target>11 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.56.1.1.3.0"><margin.target id="note106"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<s id="id.2.1.56.1.1.5.0"><margin.target id="note107"></margin.target>1 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

<margin.target id="note105"/>11 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note106"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

</s>

<margin.target id="note107"/>1 <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.57.1.2.1.0">PROPOSITIO. VI. </s>

<s id="id.2.1.57.2.1.1.0">Pondera æqualia in libra appenſa eam in gra<lb/>uitate proportionem habent; quam diſtantiæ, ex <lb/>quibus appenduntur. <figure id="id.036.01.081.1.jpg" place="text" xlink:href="036/01/081/1.jpg" xlink:type="simple"/>

<s id="id.2.1.57.2.1.1.0">Pondera æqualia in libra appen&longs;a eam in gra<lb/>uitate proportionem habent; quam di&longs;tantiæ, ex <lb/>quibus appenduntur. <figure id="id.036.01.081.1.jpg" xlink:href="036/01/081/1.jpg"></figure></s>

</s>

<s id="id.2.1.57.3.1.1.0">Sit libra BAC ſuſpenſa ex puncto A; & ſecetur AC vtcunq; <lb/>in D: ex punctis autem DC appendantur æqualia pondera EF. <lb/>

<s id="id.2.1.57.3.1.1.0">Sit libra BAC &longs;u&longs;pen&longs;a ex puncto A; & &longs;ecetur AC vtcunq; <lb/>in D: ex punctis autem DC appendantur æqualia pondera EF. <lb/></s>

</s>

<s id="id.2.1.57.3.1.1.0.a">Dico pondus F ad pondus E eam in grauitate proportionem ha<lb/>bere, quam habet di&longs;tantia CA ad di&longs;tantiam AD. </s>

<s id="id.2.1.57.3.1.1.0.a">Dico pondus F ad pondus E eam in grauitate proportionem ha<lb/>bere, quam habet diſtantia CA ad diſtantiam AD. </s>

<s id="id.2.1.57.3.1.1.0.b">fiat enim vt <lb/>CA ad AD, ita pondus F ad aliud pondus, quod &longs;it G. </s>

<s id="id.2.1.57.3.1.1.0.b">fiat enim vt <lb/>CA ad AD, ita pondus F ad aliud pondus, quod ſit G. </s>

<s id="id.2.1.57.3.1.1.0.c">Dico pri<lb/>múm pondera GF ex puncto C &longs;u&longs;pen&longs;a tantùm ponderare, quan<lb/>tùm pondera EF ex punctis DC. </s>

<s id="id.2.1.57.3.1.1.0.c">Dico pri<lb/>múm pondera GF ex puncto C ſuſpenſa tantùm ponderare, quan<lb/>tùm pondera EF ex punctis DC. </s>

<s id="id.2.1.57.3.1.1.0.d">Secetur DC bifariam in H, & <lb/>ex H appendantur vtraq; pondera EF. </s>

<s id="N125C6">ponderabunt EF ſimul <lb/>ſumpta in eo ſitu, quantùm ponderant in DC. ponatur BA <arrow.to.target n="note108" xlink:type="simple"/>

<s>ponderabunt EF &longs;imul <lb/>&longs;umpta in eo &longs;itu, quantùm ponderant in DC. ponatur BA <arrow.to.target n="note108"></arrow.to.target><lb/>æqualis AH, &longs;eceturq; BA in K, ita vt &longs;it KA æqualis AD: <lb/>deinde ex puncto B appendatur pondus L duplum ponderis F, <lb/>hoc e&longs;t æquale duobus ponderibus EF, quod quidem æqueponde<lb/>rabit ponderibus EF in H appen&longs;is, hoc e&longs;t appen&longs;is in DC. </s>

<lb/>æqualis AH, ſeceturq; BA in K, ita vt ſit KA æqualis AD: <lb/>deinde ex puncto B appendatur pondus L duplum ponderis F, <lb/>hoc eſt æquale duobus ponderibus EF, quod quidem æqueponde<lb/>rabit ponderibus EF in H appenſis, hoc eſt appenſis in DC. </s>

<s id="id.2.1.57.3.1.1.0.e"><expan abbr="Quoniã">Quoniam</expan> <lb/>igitur, vt CA ad AD, ita e&longs;t pondus F ad pondus G; erit compo<lb/>nendo vt CA AD ad AD, hoc e&longs;t vt Ck ad AD, ita ponde<lb/>ra <arrow.to.target n="note109"></arrow.to.target>FG ad pondus G. </s>

<s>&longs;ed cùm &longs;it, vt CA ad AD, ita F pon<lb/>dus ad pondus G; erit conuertendo, vt DA ad AC, ita pondus <arrow.to.target n="note110"></arrow.to.target><lb/>G ad pondus F; & con&longs;equentium dupla, vt DA ad duplam ip&longs;ius <lb/>AC, ita pondus G ad duplum ponderis F, hoc e&longs;t ad pondus <lb/>L. </s>

<expan abbr="Quoniã">Quoniam</expan>

<s id="id.2.1.57.3.1.1.0.f">Quare vt Ck ad DA, ita pondera EF ad pondus G; & vt <pb xlink:href="036/01/082.jpg"/><figure id="id.036.01.082.1.jpg" xlink:href="036/01/082/1.jpg"></figure><lb/><arrow.to.target n="note111"></arrow.to.target>AD ad <expan abbr="duplã">duplam</expan> ip&longs;ius AC, ita pondus G ad pondus L; ergo ex æquali, <lb/>vt Ck ad <expan abbr="duplã">duplam</expan> ip&longs;ius AC, ita pondera FG ad pondus L. </s>

<lb/>igitur, vt CA ad AD, ita eſt pondus F ad pondus G; erit compo<lb/>nendo vt CA AD ad AD, hoc eſt vt Ck ad AD, ita ponde<lb/>ra <arrow.to.target n="note109" xlink:type="simple"/>FG ad pondus G. </s>

<s>&longs;ed vt Ck <lb/>ad duplam AC, ita dimidia CK, videlicet AH, hoc e&longs;t BA, ad <lb/>AC. </s>

<s id="N125E5">ſed cùm ſit, vt CA ad AD, ita F pon<lb/>dus ad pondus G; erit conuertendo, vt DA ad AC, ita pondus <arrow.to.target n="note110" xlink:type="simple"/>

<lb/>G ad pondus F; & conſequentium dupla, vt DA ad duplam ipſius <lb/>AC, ita pondus G ad duplum ponderis F, hoc eſt ad pondus <lb/>L. </s>

<s id="id.2.1.57.3.1.1.0.f">Quare vt Ck ad DA, ita pondera EF ad pondus G; & vt <pb xlink:href="036/01/082.jpg" xlink:type="simple"/>

<lb/>

<arrow.to.target n="note111" xlink:type="simple"/>AD ad <expan abbr="duplã">duplam</expan> ipſius AC, ita pondus G ad pondus L; ergo ex æquali, <lb/>vt Ck ad <expan abbr="duplã">duplam</expan> ipſius AC, ita pondera FG ad pondus L. </s>

<s id="N1260C">ſed vt Ck <lb/>ad duplam AC, ita dimidia CK, videlicet AH, hoc eſt BA, ad <lb/>AC. </s>

<s id="id.2.1.57.3.1.1.0.g">Vt igitur BA ad AC, ita FG pondera ad pondus L. </s>

<s id="id.2.1.57.3.1.1.0.h">Qua<lb/>re ex ſexta eiuſdem primi Archimedis, duo pondera FG ex pun<lb/>cto C ſuſpenſa tantùm ponderabunt, quantùm pondus L ex B; <lb/>hoc eſt quantùm pondera EF ex punctis DC ſuſpenſa. </s>

<s id="id.2.1.57.3.1.1.0.h">Qua<lb/>re ex &longs;exta eiu&longs;dem primi Archimedis, duo pondera FG ex pun<lb/>cto C &longs;u&longs;pen&longs;a tantùm ponderabunt, quantùm pondus L ex B; <lb/>hoc e&longs;t quantùm pondera EF ex punctis DC &longs;u&longs;pen&longs;a. </s>

<s id="id.2.1.57.3.1.2.0">Itaq; quo<lb/>niam pondera FG tantùm ponderant, quantum pondera EF; ſu<lb/>blato communi pondere F, tàm ponderabit pondus G in C ap<lb/>penſum, quàm pondus E in D. </s>

<s id="id.2.1.57.3.1.2.0">Itaq; quo<lb/>niam pondera FG tantùm ponderant, quantum pondera EF; &longs;u<lb/>blato communi pondere F, tàm ponderabit pondus G in C ap<lb/>pen&longs;um, quàm pondus E in D. </s>

<s id="id.2.1.57.3.1.2.0.a">ac propterea pondus F ad pon<lb/>

<s id="id.2.1.57.3.1.2.0.a">ac propterea pondus F ad pon<lb/><arrow.to.target n="note112"></arrow.to.target>dus E eam in grauitate proportionem habet, quam habet ad pon<lb/>dus G. </s>

<arrow.to.target n="note112" xlink:type="simple"/>dus E eam in grauitate proportionem habet, quam habet ad pon<lb/>dus G. </s>

<s>&longs;ed pondus F ad G erat, vt CA ad AD: ergo & F pon<lb/>dus ad pondus E eam in grauitate proportionem habebit, quam ha<lb/>bet CA ad AD. </s>

<s id="N12631">ſed pondus F ad G erat, vt CA ad AD: ergo & F pon<lb/>dus ad pondus E eam in grauitate proportionem habebit, quam ha<lb/>bet CA ad AD. </s>

<s>quod demon&longs;trare oportebat. </s>

<s id="N12637">quod demonſtrare oportebat. </s>

<s id="id.2.1.58.1.1.1.0"><margin.target id="note108"></margin.target>5 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

<margin.target id="note108"/>5 <emph type="italics"/>Huius.<emph.end type="italics"/>

<s id="id.2.1.58.1.1.2.0"><margin.target id="note109"></margin.target>18 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.58.1.1.3.0"><margin.target id="note110"></margin.target><emph type="italics"/>Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

<s id="id.2.1.58.1.1.4.0"><margin.target id="note111"></margin.target>22 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note109"/>18 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.58.1.1.5.0"><margin.target id="note112"></margin.target>7 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<margin.target id="note110"/>

<emph type="italics"/>Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<margin.target id="note111"/>22 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note112"/>7 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.59.1.1.1.0">Si verò in libra <lb/>BAC pondera EF <lb/>æqualia ex punctis <lb/>BC ſuſpendantur; ſi<lb/>militer dico pondus <lb/>E ad pondus F eam <lb/>

<s id="id.2.1.59.1.1.1.0">Si verò in libra <lb/>BAC pondera EF <lb/>æqualia ex punctis <lb/>BC &longs;u&longs;pendantur; &longs;i<lb/>militer dico pondus <lb/>E ad pondus F eam <lb/><figure id="id.036.01.082.2.jpg" xlink:href="036/01/082/2.jpg"></figure><lb/>in grauitate proportionem habere, quàm habet di&longs;tantia CA ad di<lb/>&longs;tantiam AB. </s>

<s id="id.2.1.59.1.1.1.0.a">fiat AD ip&longs;i AB æqualis, & ex puncto D &longs;u&longs;pen<lb/>datur pondus G æquale ponderi F; quod etiam ip&longs;i E erit æquale. </s>

<lb/>in grauitate proportionem habere, quàm habet diſtantia CA ad di<lb/>ſtantiam AB. </s>

<s id="id.2.1.59.1.1.2.0"><lb/>& quoniam AD e&longs;t æqualis ip&longs;i AB; pondera FG æqueponde<lb/>rabunt, eandemq; habebunt grauitatem. </s>

<s id="id.2.1.59.1.1.1.0.a">fiat AD ipſi AB æqualis, & ex puncto D ſuſpen<lb/>datur pondus G æquale ponderi F; quod etiam ipſi E erit æquale. </s>

<s id="id.2.1.59.1.1.3.0">cùm autem grauitas pon<lb/>deris E ad grauitatem ponderis G &longs;it, vt CA ad AD; erit graui<lb/>tas ponderis E ad grauitatem ponderis F, vt CA ad AD, hoc e&longs;t <lb/>CA ad AB. quod erat quoq; o&longs;tendendum. </s>

<lb/>& quoniam AD eſt æqualis ipſi AB; pondera FG æqueponde<lb/>rabunt, eandemq; habebunt grauitatem. </s>

<s id="id.2.1.59.1.1.3.0">cùm autem grauitas pon<lb/>deris E ad grauitatem ponderis G ſit, vt CA ad AD; erit graui<lb/>tas ponderis E ad grauitatem ponderis F, vt CA ad AD, hoc eſt <lb/>CA ad AB. quod erat quoq; oſtendendum. </s>

<s id="id.2.1.59.3.1.1.0">ALITER. </s>

<s id="id.2.1.59.4.1.1.0">Sit libra BAC, cu<lb/>ius centrum A; in pun<lb/>ctis verò BC pondera <lb/>appendantur æqualia G <lb/>F: ſitq; primùm cen<lb/>trum A vtcunque inter <lb/>BC. </s>

<s id="id.2.1.59.4.1.1.0">Sit libra BAC, cu<lb/>ius centrum A; in pun<lb/>ctis verò BC pondera <lb/>appendantur æqualia G <lb/>F: &longs;itq; primùm cen<lb/>trum A vtcunque inter <lb/>BC. </s>

<s id="id.2.1.59.4.1.1.0.a">Dico pondus F ad <lb/>pondus G eam in graui<lb/>

<s id="id.2.1.59.4.1.1.0.a">Dico pondus F ad <lb/>pondus G eam in graui<lb/><figure id="id.036.01.083.1.jpg" xlink:href="036/01/083/1.jpg"></figure><lb/>tate proportionem habere, quam habet di&longs;tantia CA ad di&longs;tan<lb/>tiam AB. </s>

<s id="id.2.1.59.4.1.1.0.b">fiat vt BA ad AC, ita pondus F ad aliud H, quod ap<lb/>pendatur in B: pondera HF ex A æqueponderabunt. </s>

<lb/>tate proportionem habere, quam habet diſtantia CA ad diſtan<lb/>tiam AB. </s>

<s id="id.2.1.59.4.1.2.0">&longs;ed cùm <arrow.to.target n="note113"></arrow.to.target><lb/>pondera FG &longs;int æqualia, habebit pondus H ad pondus G ean<lb/>dem proportionem, quam habet ad F. </s>

<s id="id.2.1.59.4.1.1.0.b">fiat vt BA ad AC, ita pondus F ad aliud H, quod ap<lb/>pendatur in B: pondera HF ex A æqueponderabunt. </s>

<s>vt igitur CA ad AB, ita <arrow.to.target n="note114"></arrow.to.target><lb/>e&longs;t H ad G. </s>

<s>vt autem H ad G, ita e&longs;t grauitas ip&longs;ius H ad graui<lb/>tatem ip&longs;ius G; cùm in eodem puncto B &longs;int appen&longs;a. </s>

<lb/>pondera FG ſint æqualia, habebit pondus H ad pondus G ean<lb/>dem proportionem, quam habet ad F. </s>

<s id="N126DB">vt igitur CA ad AB, ita <arrow.to.target n="note114" xlink:type="simple"/>

<s id="N126E2">vt autem H ad G, ita eſt grauitas ipſius H ad graui<lb/>tatem ipſius G; cùm in eodem puncto B ſint appenſa. </s>

<s id="id.2.1.59.4.1.3.0">quare vt CA <lb/>ad AB, ita grauitas ponderis H ad grauitatem ponderis G. </s>

<s id="N126EB">cùm au<lb/>tem grauitas ponderis F in C appenſi ſit æqualis grauitati ponderis <lb/>H in B; erit grauitas ponderis F ad grauitatem ponderis G, vt CA <lb/>ad AB, videlicet vt diſtantia ad diſtantiam. </s>

<s>cùm au<lb/>tem grauitas ponderis F in C appen&longs;i &longs;it æqualis grauitati ponderis <lb/>H in B; erit grauitas ponderis F ad grauitatem ponderis G, vt CA <lb/>ad AB, videlicet vt di&longs;tantia ad di&longs;tantiam. </s>

<s id="id.2.1.59.4.1.4.0">quod demonſtrare <lb/>oportebat. </s>

<s id="id.2.1.59.4.1.4.0">quod demon&longs;trare <lb/>oportebat. </s>

<s id="id.2.1.60.1.1.1.0"><margin.target id="note113"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<margin.target id="note113"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

<s id="id.2.1.60.1.1.3.0"><margin.target id="note114"></margin.target>7 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<margin.target id="note114"/>7 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.61.1.1.1.0">Si verò libra B <lb/>AC ſecetur vtcunq; <lb/>in D, & in DC ap<lb/>pendantur pondera <lb/>æqualia EF. </s>

<s id="id.2.1.61.1.1.1.0">Si verò libra B <lb/>AC &longs;ecetur vtcunq; <lb/>in D, & in DC ap<lb/>pendantur pondera <lb/>æqualia EF. </s>

<s id="id.2.1.61.1.1.1.0.a">Dico <lb/>ſimiliter ita eſſe gra<lb/>

<s id="id.2.1.61.1.1.1.0.a">Dico <lb/>&longs;imiliter ita e&longs;&longs;e gra<lb/><figure id="id.036.01.083.2.jpg" xlink:href="036/01/083/2.jpg"></figure><lb/>uitatem ponderis F ad grauitatem ponderis E, vt di&longs;tantia CA ad <lb/>di&longs;tantiam AD. </s>

<s id="id.2.1.61.1.1.1.0.b">fiat AB æqualis ip&longs;i AD, & in B appendatur <lb/>pondus G æquale ponderi E, & ponderi F. </s>

<lb/>uitatem ponderis F ad grauitatem ponderis E, vt diſtantia CA ad <lb/>diſtantiam AD. </s>

<s id="id.2.1.61.1.1.1.0.c">Quoniam enim AB e&longs;t <lb/>æqualis AD; pondera GE æqueponderabunt. </s>

<s id="id.2.1.61.1.1.1.0.b">fiat AB æqualis ipſi AD, & in B appendatur <lb/>pondus G æquale ponderi E, & ponderi F. </s>

<s id="id.2.1.61.1.1.2.0">&longs;ed cùm grauitas <lb/>ponderis F ad grauitatem ponderis G &longs;it, vt CA ad AB, & graui<lb/>tas ponderis E &longs;it æqualis grauitati ponderis G; erit grauitas pon<lb/>deris F ad grauitatem ponderis E, vt CA ad AB, hoc e&longs;t vt CA <lb/>ad AD. </s>

<s id="id.2.1.61.1.1.1.0.c">Quoniam enim AB eſt <lb/>æqualis AD; pondera GE æqueponderabunt. </s>

<s>quod demon&longs;trare oportebat. </s>

<s id="id.2.1.61.1.1.2.0">ſed cùm grauitas <lb/>ponderis F ad grauitatem ponderis G ſit, vt CA ad AB, & graui<lb/>tas ponderis E ſit æqualis grauitati ponderis G; erit grauitas pon-<lb/>deris F ad grauitatem ponderis E, vt CA ad AB, hoc eſt vt CA <lb/>ad AD. </s>

<s id="N12741">quod demonſtrare oportebat. </s>

<s id="id.2.1.61.3.1.1.0">COROLLARIVM. </s>

<s id="id.2.1.61.4.1.1.0">Ex hoc manifeſtum eſt, quò pondus à centro <lb/>libræ magis diſtat, eò grauius eſſe; & per conſe<lb/>quens velocius moueri. </s>

<s id="id.2.1.61.4.1.1.0">Ex hoc manife&longs;tum e&longs;t, quò pondus à centro <lb/>libræ magis di&longs;tat, eò grauius e&longs;&longs;e; & per con&longs;e<lb/>quens velocius moueri. </s>

<s id="id.2.1.61.5.1.1.0"><arrow.to.target n="note115"></arrow.to.target>Hinc præterea &longs;tateræ quoq; ratio facilè o&longs;ten<lb/>detur. </s>

<arrow.to.target n="note115" xlink:type="simple"/>Hinc præterea ſtateræ quoq; ratio facilè oſten<lb/>detur. </s>

<s id="id.2.1.62.1.1.1.0"><margin.target id="note115"></margin.target><emph type="italics"/>Stateræ ratio.<emph.end type="italics"/></s>

<margin.target id="note115"/>

<emph type="italics"/>Stateræ ratio.<emph.end type="italics"/>

</s>

<s id="id.2.1.63.1.1.1.0">Sit enim ſtate<lb/>ræ ſcapus AB, cu<lb/>ius trutina ſit in <lb/>C; ſitq; ſtateræ <lb/>appendiculum E. <lb/>

<s id="id.2.1.63.1.1.1.0">Sit enim &longs;tate<lb/>ræ &longs;capus AB, cu<lb/>ius trutina &longs;it in <lb/>C; &longs;itq; &longs;tateræ <lb/>appendiculum E. <lb/></s>

</s>

<s>appendatur in A <lb/>pondus D, quod <lb/>æqueponderet ap<lb/>pendiculo E in F <lb/><figure id="id.036.01.084.1.jpg" xlink:href="036/01/084/1.jpg"></figure><lb/>appen&longs;o. </s>

<s id="N1277C">appendatur in A <lb/>pondus D, quod <lb/>æqueponderet ap<lb/>pendiculo E in F <lb/>

<s id="id.2.1.63.1.1.2.0">aliud quoq; appendatur pondus G in A, quod etiam <lb/>appendiculo E in B appen&longs;o æqueponderet. </s>

<s id="id.2.1.63.1.1.3.0">Dico grauitatem <lb/>ponderis D ad grauitatem ponderis G ita e&longs;&longs;e, vt CF ad CB. </s>

<lb/>appenſo. </s>

<s id="id.2.1.63.1.1.3.0.a"><lb/>Quoniam enim grauitas ponderis D e&longs;t æqualis grauitati ponde<lb/>ris E in F appen&longs;i, & grauitas ponderis G e&longs;t æqualis grauitati pon<lb/>deris E in B; erit grauitas ponderis D ad grauitatem ponderis E in <lb/>F, vt grauitas ponderis G ad grauitatem ponderis E in B: & permu<lb/><arrow.to.target n="note116"></arrow.to.target>tando, vt grauitas ponderis D ad grauitatem ponderis G, ita graui<lb/>tas ip&longs;ius E in F, ad grauitatem ip&longs;ius E in B; grauitas autem pon<lb/><arrow.to.target n="note117"></arrow.to.target>deris E in F ad grauitatem ponderis E in B e&longs;t, vt CF ad CB; vt <lb/>igitur grauitas ponderis D ad grauitatem ponderis G, ita e&longs;t CF <lb/>ad CB &longs;i ergo pars &longs;capi CB in partes diuidatur æquales, &longs;olo <lb/>pondere E, & propius, & longius à puncto C po&longs;ito; ponderum <lb/>grauitates, quæ ex puncto A &longs;u&longs;penduntur inter &longs;e &longs;e notæ erunt. </s>

<s id="id.2.1.63.1.1.2.0">aliud quoq; appendatur pondus G in A, quod etiam <lb/>appendiculo E in B appenſo æqueponderet. </s>

<s id="id.2.1.63.1.1.4.0"><pb n="36" xlink:href="036/01/085.jpg"/>Vt &longs;i di&longs;tantia CB tripla &longs;it di&longs;tantiæ CF, erit quoq; grauitas ip<lb/>&longs;ius G grauitatis ip&longs;ius D tripla, quod demon&longs;trare oportebat. </s>

<s id="id.2.1.63.1.1.3.0">Dico grauitatem <lb/>ponderis D ad grauitatem ponderis G ita eſſe, vt CF ad CB. </s>

<lb/>Quoniam enim grauitas ponderis D eſt æqualis grauitati ponde<lb/>ris E in F appenſi, & grauitas ponderis G eſt æqualis grauitati pon<lb/>deris E in B; erit grauitas ponderis D ad grauitatem ponderis E in <lb/>F, vt grauitas ponderis G ad grauitatem ponderis E in B: & permu<lb/>

<arrow.to.target n="note116" xlink:type="simple"/>tando, vt grauitas ponderis D ad grauitatem ponderis G, ita graui<lb/>tas ipſius E in F, ad grauitatem ipſius E in B; grauitas autem pon<lb/>

<arrow.to.target n="note117" xlink:type="simple"/>deris E in F ad grauitatem ponderis E in B eſt, vt CF ad CB; vt <lb/>igitur grauitas ponderis D ad grauitatem ponderis G, ita eſt CF <lb/>ad CB ſi ergo pars ſcapi CB in partes diuidatur æquales, ſolo <lb/>pondere E, & propius, & longius à puncto C poſito; ponderum <lb/>grauitates, quæ ex puncto A ſuſpenduntur inter ſe ſe notæ erunt. </s>

<pb n="36" xlink:href="036/01/085.jpg" xlink:type="simple"/>Vt ſi diſtantia CB tripla ſit diſtantiæ CF, erit quoq; grauitas ip<lb/>ſius G grauitatis ipſius D tripla, quod demonſtrare oportebat. </s>

<s id="id.2.1.64.1.1.1.0"><margin.target id="note116"></margin.target>16 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note116"/>16 <emph type="italics"/>Quinti.<emph.end type="italics"/>

<s id="id.2.1.64.1.1.2.0"><margin.target id="note117"></margin.target>6 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

</s>

<margin.target id="note117"/>6 <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.65.1.1.1.0">Alio quoq; modo ſtatera vti poſſumus, vt <lb/>ponderum grauitates notæ reddantur. </s>

<s id="id.2.1.65.1.1.1.0">Alio quoq; modo &longs;tatera vti po&longs;&longs;umus, vt <lb/>ponderum grauitates notæ reddantur. </s>

<s id="id.2.1.65.2.1.1.0">Sit ſcapus AB, cuius tru<lb/>tina ſit in C; ſitq; ſtateræ ap<lb/>pendiculum E, quod appen<lb/>datur in A; ſintqué pon<lb/>dera DG inæqualia, quorum <lb/>inter ſe ſe grauitatum propor<lb/>tiones quærimus: appenda<lb/>tur pondus D in B, ita vt ipſi <lb/>

<s id="id.2.1.65.2.1.1.0">Sit &longs;capus AB, cuius tru<lb/>tina &longs;it in C; &longs;itq; &longs;tateræ ap<lb/>pendiculum E, quod appen<lb/>datur in A; &longs;intqué pon<lb/>dera DG inæqualia, quorum <lb/>inter &longs;e &longs;e grauitatum propor<lb/>tiones quærimus: appenda<lb/>tur pondus D in B, ita vt ip&longs;i <lb/><figure id="id.036.01.085.1.jpg" xlink:href="036/01/085/1.jpg"></figure><lb/>E æqueponderet. </s>

<s id="id.2.1.65.2.1.2.0">&longs;imiliter pondus G appendatur in F, quod ei<lb/>dem ponderi E æqueponderet. </s>

<lb/>E æqueponderet. </s>

<s id="id.2.1.65.2.1.3.0">dico D ad G ita e&longs;&longs;e, vt CF ad <lb/>CB. </s>

<s id="id.2.1.65.2.1.2.0">ſimiliter pondus G appendatur in F, quod ei<lb/>dem ponderi E æqueponderet. </s>

<s id="id.2.1.65.2.1.3.0.a">Quoniam enim pondera DE æqueponderant, erit D ad E, <arrow.to.target n="note118"></arrow.to.target><lb/>vt CA ad CB. </s>

<s>cùm autem pondera quoque GE æquepon<lb/>derent, erit pondus E ad pondus G, vt FC ad CA; quare ex æqua <lb/>li pondus D ad pondus G ita erit, vt CF ad CB. </s>

<s id="id.2.1.65.2.1.3.0.a">Quoniam enim pondera DE æqueponderant, erit D ad E, <arrow.to.target n="note118" xlink:type="simple"/>

<s>quod o&longs;tende<arrow.to.target n="note119"></arrow.to.target><lb/>re quoq; oportebat. </s>

<s id="N1280A">cùm autem pondera quoque GE æquepon<lb/>derent, erit pondus E ad pondus G, vt FC ad CA; quare ex æqua <lb/>li pondus D ad pondus G ita erit, vt CF ad CB. </s>

<s id="N12810">quod oſtende<arrow.to.target n="note119" xlink:type="simple"/>

<lb/>re quoq; oportebat. </s>

<s id="id.2.1.66.1.1.1.0"><margin.target id="note118"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<margin.target id="note118"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

<s id="id.2.1.66.1.1.3.0"><margin.target id="note119"></margin.target>23 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<margin.target id="note119"/>23 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.67.1.2.1.0">PROPOSITIO VII. </s>

<s id="id.2.1.67.1.4.1.0">PROBLEMA. </s>

<s id="id.2.1.67.2.1.1.0">Quotcunque datis in libra ponderibus <lb/>vbicunque appenſis, centrum libræ inuenire, <lb/>ex quo ſi ſuſpendatur libra, data pondera ma<lb/>neant. <figure id="id.036.01.086.1.jpg" place="text" xlink:href="036/01/086/1.jpg" xlink:type="simple"/>

<s id="id.2.1.67.2.1.1.0">Quotcunque datis in libra ponderibus <lb/>vbicunque appen&longs;is, centrum libræ inuenire, <lb/>ex quo &longs;i &longs;u&longs;pendatur libra, data pondera ma<lb/>neant. <figure id="id.036.01.086.1.jpg" xlink:href="036/01/086/1.jpg"></figure></s>

</s>

<s id="id.2.1.67.3.1.1.0">Sit libra AB, ſintq; data quotcunque pondera CDEFG. <lb/>

<s id="id.2.1.67.3.1.1.0">Sit libra AB, &longs;intq; data quotcunque pondera CDEFG. <lb/></s>

</s>

<s id="id.2.1.67.3.1.1.0.a">accipiantur in libra vtcunque puncta AHkLB, ex quibus <lb/>data pondera <expan abbr="&longs;pu&longs;pendantur">suspendantur</expan>. </s>

<s id="id.2.1.67.3.1.1.0.a">accipiantur in libra vtcunque puncta AHkLB, ex quibus <lb/>data pondera <expan abbr="ſpuſpendantur">suspendantur</expan>. </s>

<s id="id.2.1.67.3.1.2.0">Centrum libræ inuenire oportet, <lb/>ex quo &longs;i fiat &longs;u&longs;pen&longs;io, data pondera maneant. </s>

<s id="id.2.1.67.3.1.2.0">Centrum libræ inuenire oportet, <lb/>ex quo ſi fiat ſuſpenſio, data pondera maneant. </s>

<s id="id.2.1.67.3.1.3.0">Diuidatur <pb n="37" xlink:href="036/01/087.jpg"/><figure id="id.036.01.087.1.jpg" xlink:href="036/01/087/1.jpg"></figure><lb/>AH in M, ita vt HM ad MA, &longs;it vt grauitas ponderis <lb/>C ad grauitatem ponderis D. </s>

<s id="id.2.1.67.3.1.3.0">Diuidatur <pb n="37" xlink:href="036/01/087.jpg" xlink:type="simple"/>

<s id="id.2.1.67.3.1.3.0.a">deinde diuidatur BL in N, ita <lb/>vt LN ad NB, &longs;it vt grauitas ponderis G ad grauitatem pon<lb/>deris F. </s>

<s>diuidaturq; MN in O, ita vt MO ad ON &longs;it, vt <lb/>grauitas ponderum FG ad grauitatem ponderum CD. </s>

<lb/>AH in M, ita vt HM ad MA, ſit vt grauitas ponderis <lb/>C ad grauitatem ponderis D. </s>

<s id="id.2.1.67.3.1.3.0.b">tandem<lb/>què diuidatur kO in P, ita vt kP ad PO, &longs;it vt grauitas pon<lb/>derum CDFG ad grauitatem ponderis E. </s>

<s id="id.2.1.67.3.1.3.0.a">deinde diuidatur BL in N, ita <lb/>vt LN ad NB, ſit vt grauitas ponderis G ad grauitatem pon<lb/>deris F. </s>

<s id="id.2.1.67.3.1.3.0.c">Quoniam igitur pon<lb/>dera CDFG tàm ponderant in O, quàm CD in M, & FG in N; <arrow.to.target n="note120"></arrow.to.target><lb/>æqueponderabunt pondera CD in M, & FG in N, & pondus E <lb/>in K, &longs;i ex puncto P &longs;u&longs;pendantur. </s>

<s id="N12879">diuidaturq; MN in O, ita vt MO ad ON ſit, vt <lb/>grauitas ponderum FG ad grauitatem ponderum CD. </s>

<s id="id.2.1.67.3.1.4.0">cùm verò pondera CD tan<lb/>tùm ponderent in M, quantùm in AH, & FG in N, quantùm <lb/>in LB; pondera CDFG ex AHLB punctis &longs;u&longs;pen&longs;a, & pon<lb/>dus E ex k, &longs;i ex P &longs;u&longs;pendantur, æqueponderabunt, atq; mane<lb/>bunt. </s>

<s id="id.2.1.67.3.1.3.0.b">tandem<lb/>què diuidatur kO in P, ita vt kP ad PO, ſit vt grauitas pon<lb/>derum CDFG ad grauitatem ponderis E. </s>

<s id="id.2.1.67.3.1.5.0">Inuentum e&longs;t ergo centrum libræ P, ex quo data pondera <lb/>manent. </s>

<s id="id.2.1.67.3.1.3.0.c">Quoniam igitur pon<lb/>dera CDFG tàm ponderant in O, quàm CD in M, & FG in N; <arrow.to.target n="note120" xlink:type="simple"/>

<lb/>æqueponderabunt pondera CD in M, & FG in N, & pondus E <lb/>in K, ſi ex puncto P ſuſpendantur. </s>

<s id="id.2.1.67.3.1.4.0">cùm verò pondera CD tan<lb/>tùm ponderent in M, quantùm in AH, & FG in N, quantùm <lb/>in LB; pondera CDFG ex AHLB punctis ſuſpenſa, & pon<lb/>dus E ex k, ſi ex P ſuſpendantur, æqueponderabunt, atq; mane<lb/>bunt. </s>

<s id="id.2.1.67.3.1.5.0">Inuentum eſt ergo centrum libræ P, ex quo data pondera <lb/>manent. </s>

<s id="id.2.1.67.3.1.6.0">quod facere oportebat. </s>

<s id="id.2.1.68.1.1.1.0"><margin.target id="note120"></margin.target>5 <emph type="italics"/>Huius.<emph.end type="italics"/></s>

<margin.target id="note120"/>5 <emph type="italics"/>Huius.<emph.end type="italics"/>

</s>

<s id="id.2.1.69.1.2.1.0">COROLLARIVM. </s>

<s id="id.2.1.69.2.1.1.0">Ex hoc manifeſtum eſt, ſi ponderum CDEFG <lb/>centra grauitatis eſſent in AHKLB punctis; eſ<lb/>ſet punctum P magnitudinis ex omnibus CD <lb/>EFG ponderibus compoſitæ centrum graui<lb/>tatis. <figure id="id.036.01.088.1.jpg" place="text" xlink:href="036/01/088/1.jpg" xlink:type="simple"/>

<s id="id.2.1.69.2.1.1.0">Ex hoc manife&longs;tum e&longs;t, &longs;i ponderum CDEFG <lb/>centra grauitatis e&longs;&longs;ent in AHKLB punctis; e&longs;<lb/>&longs;et punctum P magnitudinis ex omnibus CD <lb/>EFG ponderibus compo&longs;itæ centrum graui<lb/>tatis. <figure id="id.036.01.088.1.jpg" xlink:href="036/01/088/1.jpg"></figure></s>

</s>

<s id="id.2.1.69.3.1.1.0">Hoc enim ex definitione centri grauitatis patet, cùm ponde<lb/>ra, ſi ex puncto P ſuſpendantur, maneant. </s>

<s id="id.2.1.69.3.1.1.0">Hoc enim ex definitione centri grauitatis patet, cùm ponde<lb/>ra, &longs;i ex puncto P &longs;u&longs;pendantur, maneant. </s>

</chap>

<chap>

<s id="id.2.1.69.5.1.1.0">DE VECTE. </s>

<s id="id.2.1.69.5.3.1.0">LEMMA. </s>

<s id="id.2.1.69.6.1.1.0">Sint quatuor magnitudines A <lb/>BCD; ſitq; A maior B, & C ma<lb/>ior D. </s>

<s id="id.2.1.69.6.1.1.0">Sint quatuor magnitudines A <lb/>BCD; &longs;itq; A maior B, & C ma<lb/>ior D. </s>

<s id="id.2.1.69.6.1.1.0.a">Dico A ad D maiorem <lb/>habere proportionem; quàm <lb/>habet B ad C. </s>

<s id="id.2.1.69.7.1.1.0">Quoniam enim A ad C maiorem habet pro<lb/>portionem, quàm B ad C; & A ad D maio<lb/>rem <arrow.to.target n="note121" xlink:type="simple"/>quoq; habet proportionem, quam habet <lb/>ad C: A igitur ad D maiorem habebit, quam B <lb/>ad C. quod demonſtrare oportebat. </s>

<s id="id.2.1.69.7.1.1.0">Quoniam enim A ad C maiorem habet pro<lb/>portionem, quàm B ad C; & A ad D maio<lb/>rem <arrow.to.target n="note121"></arrow.to.target>quoq; habet proportionem, quam habet <lb/>ad C: A igitur ad D maiorem habebit, quam B <lb/>ad C. quod demon&longs;trare oportebat. </s>

<s id="id.2.1.70.1.1.1.0"><margin.target id="note121"></margin.target>8 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note121"/>8 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

</figure>

<s id="id.2.1.71.1.3.1.0">PROPOSITIO I. </s>

<s id="id.2.1.71.2.1.1.0">Potentia ſuſtinens pondus vecti appenſum; <lb/>eandem ad ipſum pondus proportionem habe<lb/>bit, quam vectis diſtantia inter fulcimentum, ac <lb/>ponderis ſuſpenſionem ad diſtantiam à fulcimen<lb/>to ad potentiam interiectam. <pb xlink:href="036/01/090.jpg" xlink:type="simple"/>

<s id="id.2.1.71.2.1.1.0">Potentia &longs;u&longs;tinens pondus vecti appen&longs;um; <lb/>eandem ad ip&longs;um pondus proportionem habe<lb/>bit, quam vectis di&longs;tantia inter fulcimentum, ac <lb/>ponderis &longs;u&longs;pen&longs;ionem ad di&longs;tantiam à fulcimen<lb/>to ad potentiam interiectam. <pb xlink:href="036/01/090.jpg"/><figure id="id.036.01.090.1.jpg" xlink:href="036/01/090/1.jpg"></figure></s>

</s>

<s id="id.2.1.71.3.1.1.0">Sit vectis AB, cuius fulcimentum C; ſitq; pondus D ex A ſu<lb/>ſpenſum AH, ita vt AH ſit ſemper horizonti perpendicularis: <lb/>ſitq; potentia ſuſtinens pondus in B. </s>

<s id="id.2.1.71.3.1.1.0">Sit vectis AB, cuius fulcimentum C; &longs;itq; pondus D ex A &longs;u<lb/>&longs;pen&longs;um AH, ita vt AH &longs;it &longs;emper horizonti perpendicularis: <lb/>&longs;itq; potentia &longs;u&longs;tinens pondus in B. </s>

<s id="id.2.1.71.3.1.1.0.a">Dico potentiam in B ad pon<lb/>dus D ita eſſe, vt CA ad CB. </s>

<s id="id.2.1.71.3.1.1.0.a">Dico potentiam in B ad pon<lb/>dus D ita e&longs;&longs;e, vt CA ad CB. </s>

<s id="id.2.1.71.3.1.1.0.b">fiat vt BC ad CA, ita pondus D <lb/>

<s id="id.2.1.71.3.1.1.0.b">fiat vt BC ad CA, ita pondus D <lb/><arrow.to.target n="note122"></arrow.to.target>ad aliud pondus E, quippè quod &longs;i in B appendatur; ip&longs;i D æque <lb/>ponderabit, exi&longs;tente C amborum grauitatis centro. </s>

<arrow.to.target n="note122" xlink:type="simple"/>ad aliud pondus E, quippè quod ſi in B appendatur; ipſi D æque <lb/>ponderabit, exiſtente C amborum grauitatis centro. </s>

<s id="id.2.1.71.3.1.2.0">quare poten<lb/>tia æqualis ip&longs;i E ibidem con&longs;tituta ip&longs;i D æqueponderabit, vecte <lb/>AB, eius fulcimento in C collocato, hoc e&longs;t prohibebit, ne pon<lb/>dus D deor&longs;um vergat, quemadmodum prohibet pondus E. </s>

<s id="id.2.1.71.3.1.2.0">quare poten<lb/>tia æqualis ipſi E ibidem conſtituta ipſi D æqueponderabit, vecte <lb/>AB, eius fulcimento in C collocato, hoc eſt prohibebit, ne pon<lb/>dus D deorſum vergat, quemadmodum prohibet pondus E. </s>

<s id="id.2.1.71.3.1.2.0.a">Po<lb/><arrow.to.target n="note123"></arrow.to.target>tentia verò in B ad pondus D eandem habet proportionem, quam <lb/>pondus E ad idem pondus D: ergo potentia in B ad pondus D <lb/>erit, vt CA ad CB; hoc e&longs;t vectis di&longs;tantia à fulcimento ad pon<lb/>deris &longs;u&longs;pendium ad di&longs;tantiam à fulcimento ad potentiam. </s>

<s id="id.2.1.71.3.1.3.0">quod <lb/>demon&longs;trare oportebat. </s>

<arrow.to.target n="note123" xlink:type="simple"/>tentia verò in B ad pondus D eandem habet proportionem, quam <lb/>pondus E ad idem pondus D: ergo potentia in B ad pondus D <lb/>erit, vt CA ad CB; hoc eſt vectis diſtantia à fulcimento ad pon<lb/>deris ſuſpendium ad diſtantiam à fulcimento ad potentiam. </s>

<s id="id.2.1.71.3.1.3.0">quod <lb/>demonſtrare oportebat. </s>

<s id="id.2.1.72.1.1.1.0"><margin.target id="note122"></margin.target>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/></s>

<margin.target id="note122"/>6 <emph type="italics"/>Primi Archim. de æquep.<emph.end type="italics"/>

<s id="id.2.1.72.1.1.3.0"><margin.target id="note123"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 7 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

</s>

<margin.target id="note123"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 7 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.73.1.1.1.0">Hinc facilè oſtendi poteſt, fulcimentum quò <lb/>ponderi fuerit propius, minorem ad idem pon<lb/>dus ſuſtinendum requiri potentiam. </s>

<s id="id.2.1.73.1.1.1.0">Hinc facilè o&longs;tendi pote&longs;t, fulcimentum quò <lb/>ponderi fuerit propius, minorem ad idem pon<lb/>dus &longs;u&longs;tinendum requiri potentiam. </s>

<s id="id.2.1.73.2.1.1.0">Iiſdem poſi<lb/>tis, ſit fulcimen <lb/>tum in F ipſi A <lb/>propius, quàm <lb/>C; fiatq; vt BF <lb/>ad FA, ita pon<lb/>dus D ad aliud <lb/>

<s id="id.2.1.73.2.1.1.0">Ii&longs;dem po&longs;i<lb/>tis, &longs;it fulcimen <lb/>tum in F ip&longs;i A <lb/>propius, quàm <lb/>C; fiatq; vt BF <lb/>ad FA, ita pon<lb/>dus D ad aliud <lb/><figure id="id.036.01.090.2.jpg" xlink:href="036/01/090/2.jpg"></figure><lb/>G, quod &longs;i appendatur in B, pondera DG ex fulcimento E <lb/><arrow.to.target n="note124"></arrow.to.target>æqueponderabunt. </s>

<s id="id.2.1.73.2.1.2.0">quoniam autem BF maior e&longs;t BC, & CA <lb/><arrow.to.target n="note125"></arrow.to.target>maior AC; maior erit proportio BF ad FA, quàm BC ad CA: <pb n="39" xlink:href="036/01/091.jpg"/>& ideo maior quoq; erit proportio ponderis D ad pondus G, <lb/>quàm idem D ad E: pondus igitur G minus erit pondere E. cùm <arrow.to.target n="note126"></arrow.to.target><lb/>autem potentia in B ip&longs;i G æqualis ponderi D æqueponderet, mi<lb/>nor potentia, quàm ea, quæ ponderi E e&longs;t æqualis, pondus D &longs;u<lb/>&longs;tinebit; exi&longs;tente vecte AB, eius verò fulcimento vbi F, quàm &longs;i <lb/>fuerit vbi C. &longs;imiliter quoq; o&longs;tendetur, quò propius erit fulci<lb/>mentum ponderi D, adhuc &longs;emper minorem requiri potentiam <lb/>ad &longs;u&longs;tinendum pondus D. </s>

<lb/>G, quod ſi appendatur in B, pondera DG ex fulcimento E <lb/>

<arrow.to.target n="note124" xlink:type="simple"/>æqueponderabunt. </s>

<s id="id.2.1.73.2.1.2.0">quoniam autem BF maior eſt BC, & CA <lb/>

<arrow.to.target n="note125" xlink:type="simple"/>maior AC; maior erit proportio BF ad FA, quàm BC ad CA: <pb n="39" xlink:href="036/01/091.jpg" xlink:type="simple"/>& ideo maior quoq; erit proportio ponderis D ad pondus G, <lb/>quàm idem D ad E: pondus igitur G minus erit pondere E. cùm <arrow.to.target n="note126" xlink:type="simple"/>

<lb/>autem potentia in B ipſi G æqualis ponderi D æqueponderet, mi<lb/>nor potentia, quàm ea, quæ ponderi E eſt æqualis, pondus D ſu<lb/>ſtinebit; exiſtente vecte AB, eius verò fulcimento vbi F, quàm ſi <lb/>fuerit vbi C. ſimiliter quoq; oſtendetur, quò propius erit fulci<lb/>mentum ponderi D, adhuc ſemper minorem requiri potentiam <lb/>ad ſuſtinendum pondus D. </s>

<s id="id.2.1.74.1.1.1.0"><margin.target id="note124"></margin.target><emph type="italics"/>Ex eadem Sexta.<emph.end type="italics"/></s>

<margin.target id="note124"/>

<s id="id.2.1.74.1.1.2.0"><margin.target id="note125"></margin.target><emph type="italics"/>Lemma.<emph.end type="italics"/></s>

<emph type="italics"/>Ex eadem Sexta.<emph.end type="italics"/>

<s id="id.2.1.74.1.1.3.0"><margin.target id="note126"></margin.target>10 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<margin.target id="note125"/>

<emph type="italics"/>Lemma.<emph.end type="italics"/>

</s>

<margin.target id="note126"/>10 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.75.1.1.1.0">COROLLARIVM. </s>

<s id="id.2.1.75.2.1.1.0">Vnde palàm colligere licet, exiſtente AF ipſa <lb/>FB minore, minorem quoq; requiri potentiam <lb/>in ipſo B pondere D ſuſtinendo. </s>

<s id="id.2.1.75.2.1.1.0">Vnde palàm colligere licet, exi&longs;tente AF ip&longs;a <lb/>FB minore, minorem quoq; requiri potentiam <lb/>in ip&longs;o B pondere D &longs;u&longs;tinendo. </s>

<s id="id.2.1.75.2.1.2.0">æquali verò <lb/>æqualem. </s>

<s id="N12A02">maiore verò maiorem. </s>

<s>maiore verò maiorem. </s>

<s id="id.2.1.75.3.1.1.0">PROPOSITIO II. </s>

<s id="id.2.1.75.4.1.1.0">Alio modo vecte vti poſsumus. </s>

<s id="id.2.1.75.4.1.1.0">Alio modo vecte vti po&longs;sumus. </s>

<s id="id.2.1.75.5.1.1.0">Sit vectis AB, cuius <lb/>fulcimentum ſit B, & <lb/>pondus C vtcunq; in <lb/>D inter AB appen<lb/>ſum; ſitq; potentia in <lb/>A ſuſtinens pondus C. </s>

<s id="id.2.1.75.5.1.1.0">Sit vectis AB, cuius <lb/>fulcimentum &longs;it B, & <lb/>pondus C vtcunq; in <lb/>D inter AB appen<lb/>&longs;um; &longs;itq; potentia in <lb/>A &longs;u&longs;tinens pondus C. </s>

<s id="id.2.1.75.5.1.1.0.a"><lb/>Dico vt BD ad BA, <lb/><figure id="id.036.01.091.1.jpg" xlink:href="036/01/091/1.jpg"></figure><lb/>ita e&longs;&longs;e potentiam in A ad pondus C. </s>

<s>appendatur in A pondus <lb/>E æquale ip&longs;i C; & vt AB ad BD, ita fiat pondus E ad aliud F. <lb/>& quoniam pondera CE &longs;unt inter &longs;e &longs;e æqualia, erit pondus C <lb/>ad pondus F, vt AB ad BD. </s>

<s>appendatur quoq; pondus F in A. <lb/></s>

<lb/>ita eſſe potentiam in A ad pondus C. </s>

<s>& quoniam pondus E ad pondus F e&longs;t, vt grauitas ip&longs;ius E ad gra<lb/>uitatem <arrow.to.target n="note127"></arrow.to.target>ip&longs;ius F; & pondus E ad F e&longs;t, vt AB ad BD; vt igitur <lb/>grauitas ponderis E ad grauitatem ponderis F, ita e&longs;t AB ab BD. <lb/></s>

<s id="N12A2C">appendatur in A pondus <lb/>E æquale ipſi C; & vt AB ad BD, ita fiat pondus E ad aliud F. <lb/>& quoniam pondera CE ſunt inter ſe ſe æqualia, erit pondus C <lb/>ad pondus F, vt AB ad BD. </s>

<s>vt autem AB ad BD, ita e&longs;t grauitas ponderis E ad grauitatem <arrow.to.target n="note128"></arrow.to.target><pb xlink:href="036/01/092.jpg"/>ponderis C: quare gra<lb/>uitas ponderis E ad <lb/>grauitatem ponderis <lb/>F ita erit, vt grauitas <lb/>ponderis E ad gra<lb/>uitatem ponderis C. </s>

<s id="N12A34">appendatur quoq; pondus F in A. <lb/>

<s id="id.2.1.75.5.1.1.0.b"><lb/>Pondera igitur CF <lb/><figure id="id.036.01.092.1.jpg" xlink:href="036/01/092/1.jpg"></figure><lb/><arrow.to.target n="note129"></arrow.to.target>eandem habent grauitatem. </s>

</s>

<s id="id.2.1.75.5.1.2.0">Ponatur itaq; potentia in A &longs;u&longs;tinens <lb/>pondus F; erit potentia in A æqualis ip&longs;i ponderi F. </s>

<s id="N12A37">& quoniam pondus E ad pondus F eſt, vt grauitas ipſius E ad gra<lb/>uitatem <arrow.to.target n="note127" xlink:type="simple"/>ipſius F; & pondus E ad F eſt, vt AB ad BD; vt igitur <lb/>grauitas ponderis E ad grauitatem ponderis F, ita eſt AB ab BD. <lb/>

<s id="id.2.1.75.5.1.2.0.a">& quoniam <lb/>pondus F in A appen&longs;um æquè graue e&longs;t, vt pondus C in D ap<lb/>pen&longs;um; eandem proportionem habebit potentia in A ad grauita<lb/><arrow.to.target n="note130"></arrow.to.target>tem ponderis F in A appen&longs;i, quam habet ad grauitatem ponde<lb/>ris C in D appen&longs;i. </s>

</s>

<s id="id.2.1.75.5.1.3.0">Potentia verò in A ip&longs;i F æqualis &longs;u&longs;tinet <lb/>pondus F, ergo potentia in A pondus quoq; C &longs;u&longs;tinebit. </s>

<s id="N12A42">vt autem AB ad BD, ita eſt grauitas ponderis E ad grauitatem <arrow.to.target n="note128" xlink:type="simple"/>

<s id="id.2.1.75.5.1.4.0">Itaq; <lb/>cùm potentia in A &longs;it æqualis ponderi F, & pondus C ad pon<lb/>dus F &longs;it, vt AB ad BD; erit pondus C ad potentiam in A, vt <lb/><arrow.to.target n="note131"></arrow.to.target>AB ad BD. & è conuer&longs;o, vt BD ad BA, ita potentia in A ad <lb/>pondus C. potentia ergo ad pondus ita erit, vt di&longs;tantia fulci<lb/>mento, ac ponderis &longs;u&longs;pen&longs;ioni intercepta ad di&longs;tantiam à fulci <lb/>mento ad potentiam. </s>

<pb xlink:href="036/01/092.jpg" xlink:type="simple"/>ponderis C: quare gra<lb/>uitas ponderis E ad <lb/>grauitatem ponderis <lb/>F ita erit, vt grauitas <lb/>ponderis E ad gra<lb/>uitatem ponderis C. </s>

<s id="id.2.1.75.5.1.5.0">quod oportebat demon&longs;trare. </s>

<lb/>Pondera igitur CF <lb/>

<lb/>

<arrow.to.target n="note129" xlink:type="simple"/>eandem habent grauitatem. </s>

<s id="id.2.1.75.5.1.2.0">Ponatur itaq; potentia in A ſuſtinens <lb/>pondus F; erit potentia in A æqualis ipſi ponderi F. </s>

<s id="id.2.1.75.5.1.2.0.a">& quoniam <lb/>pondus F in A appenſum æquè graue eſt, vt pondus C in D ap<lb/>penſum; eandem proportionem habebit potentia in A ad grauita<lb/>

<arrow.to.target n="note130" xlink:type="simple"/>tem ponderis F in A appenſi, quam habet ad grauitatem ponde<lb/>ris C in D appenſi. </s>

<s id="id.2.1.75.5.1.3.0">Potentia verò in A ipſi F æqualis ſuſtinet <lb/>pondus F, ergo potentia in A pondus quoq; C ſuſtinebit. </s>

<s id="id.2.1.75.5.1.4.0">Itaq; <lb/>cùm potentia in A ſit æqualis ponderi F, & pondus C ad pon<lb/>dus F ſit, vt AB ad BD; erit pondus C ad potentiam in A, vt <lb/>

<arrow.to.target n="note131" xlink:type="simple"/>AB ad BD. & è conuerſo, vt BD ad BA, ita potentia in A ad <lb/>pondus C. potentia ergo ad pondus ita erit, vt diſtantia fulci<lb/>mento, ac ponderis ſuſpenſioni intercepta ad diſtantiam à fulci <lb/>mento ad potentiam. </s>

<s id="id.2.1.75.5.1.5.0">quod oportebat demonſtrare. </s>

<s id="id.2.1.76.1.1.1.0"><margin.target id="note127"></margin.target><emph type="italics"/>In &longs;exta huius de libra Ex<emph.end type="italics"/> 11 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

<margin.target id="note127"/>

<s id="id.2.1.76.1.1.2.0"><margin.target id="note128"></margin.target>6 <emph type="italics"/>Huius. de libra.<emph.end type="italics"/></s>

<emph type="italics"/>In ſexta huius de libra Ex<emph.end type="italics"/> 11 <emph type="italics"/>quinti.<emph.end type="italics"/>

<s id="id.2.1.76.1.1.4.0"><margin.target id="note129"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 9 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.76.1.1.5.0"><margin.target id="note130"></margin.target><emph type="italics"/>Ex<emph.end type="italics"/> 7 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

<s id="id.2.1.76.1.1.6.0"><margin.target id="note131"></margin.target><emph type="italics"/>Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/></s>

<margin.target id="note128"/>6 <emph type="italics"/>Huius. de libra.<emph.end type="italics"/>

</s>

<margin.target id="note129"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 9 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<margin.target id="note130"/>

<emph type="italics"/>Ex<emph.end type="italics"/> 7 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<margin.target id="note131"/>

<emph type="italics"/>Cor.<emph.end type="italics"/> 4 <emph type="italics"/>quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.77.1.1.1.0">ALITER. </s>

</figure>

<s id="id.2.1.77.2.1.1.0">Sit vectis AB, cuius fulcimentum ſit B, & pondus E ex puncto <lb/>C ſuſpenſum; ſitq; vis in A ſuſtinens pondus E. </s>

<s id="id.2.1.77.2.1.1.0">Sit vectis AB, cuius fulcimentum &longs;it B, & pondus E ex puncto <lb/>C &longs;u&longs;pen&longs;um; &longs;itq; vis in A &longs;u&longs;tinens pondus E. </s>

<s id="id.2.1.77.2.1.1.0.a">Dico vt BC ad BA, <lb/>ita eſſe potentiam in A ad pondus E. </s>

<s id="id.2.1.77.2.1.1.0.a">Dico vt BC ad BA, <lb/>ita e&longs;&longs;e potentiam in A ad pondus E. </s>

<s id="id.2.1.77.2.1.1.0.b">Producatur AB in C, & <lb/>fiat BD æqualis BC; & ex puncto D appendatur pondus F æqua <lb/>le ponderi E; itemq; ex puncto A ſuſpendatur pondus G ita, vt <lb/>pondus F ad pondus G eandem habeat proportionem, quam AB <pb n="40" xlink:href="036/01/093.jpg" xlink:type="simple"/>ad BA. </s>

<s id="id.2.1.77.2.1.1.0.b">Producatur AB in C, & <lb/>fiat BD æqualis BC; & ex puncto D appendatur pondus F æqua <lb/>le ponderi E; itemq; ex puncto A &longs;u&longs;pendatur pondus G ita, vt <lb/>pondus F ad pondus G eandem habeat proportionem, quam AB <pb n="40" xlink:href="036/01/093.jpg"/>ad BA. </s>

<s id="N12B01">pondera FG æqueponderabunt. </s>

<s>pondera FG æqueponderabunt. </s>

<s id="id.2.1.77.2.1.2.0">cùm autem ſit CB æqua <lb/>lis BD, pondera quoq; FE æqualia æqueponderabunt. </s>

<s id="id.2.1.77.2.1.2.0">cùm autem &longs;it CB æqua <lb/>lis BD, pondera quoq; FE æqualia æqueponderabunt. </s>

<s id="id.2.1.77.2.1.3.0">pondera <lb/>verò FEG in libra, ſeu vecte DBA appenſa, cuius fulcimentum <lb/>eſt B, non æqueponderabunt; ſed ex parte A deorſum tendent. </s>

<s id="id.2.1.77.2.1.3.0">pondera <lb/>verò FEG in libra, &longs;eu vecte DBA appen&longs;a, cuius fulcimentum <lb/>e&longs;t B, non æqueponderabunt; &longs;ed ex parte A deor&longs;um tendent. </s>

<s id="id.2.1.77.2.1.4.0">po<lb/>natur itaq; in A tanta vis, vt pondera FEG æqueponderent; erit <lb/>potentia in A æqualis ponderi G. </s>

<s id="N12B16">pondera enim FE <expan abbr="æqueponderãt">æqueponderant</expan>, <lb/>& vis in A nihil aliud efficere debet, niſi ſuſtinere <expan abbr="põdus">pondus</expan> G, ne deſcen<lb/>dat. </s>

<s>pondera enim FE <expan abbr="æqueponderãt">æqueponderant</expan>, <lb/>& vis in A nihil aliud efficere debet, ni&longs;i &longs;u&longs;tinere <expan abbr="põdus">pondus</expan> G, ne de&longs;cen<lb/>dat. </s>

<s id="id.2.1.77.2.1.5.0">& quoniam pondera FEG, & potentia in A æqueponderant, <lb/>demptis igitur FG ponderibus, quæ æqueponderant, reliqua æque <lb/>ponderabunt; ſcilicet potentia in A ponderi E, hoc eſt potentia <lb/>in A pondus E ſuſtinebit, ita vt vectis AB maneat, vt prius erat. </s>

<s id="id.2.1.77.2.1.5.0">& quoniam pondera FEG, & potentia in A æqueponderant, <lb/>demptis igitur FG ponderibus, quæ æqueponderant, reliqua æque <lb/>ponderabunt; &longs;cilicet potentia in A ponderi E, hoc e&longs;t potentia <lb/>in A pondus E &longs;u&longs;tinebit, ita vt vectis AB maneat, vt prius erat. </s>

<s id="id.2.1.77.2.1.6.0"><lb/>Cùm autem potentia in A &longs;it æqualis ponderi G, & pondus E pon<lb/>deri F æquale; habebit potentia in A ad pondus E eandem pro<lb/>portionem, quam habet BD, hoc e&longs;t BC ad BA. </s>

<lb/>Cùm autem potentia in A ſit æqualis ponderi G, & pondus E pon<lb/>deri F æquale; habebit potentia in A ad pondus E eandem pro<lb/>portionem, quam habet BD, hoc eſt BC ad BA. </s>

<s>quod demon<lb/>&longs;trare oportebat. </s>

<s id="N12B35">quod demon<lb/>ſtrare oportebat. </s>

<s id="id.2.1.77.3.1.1.0">COROLLARIVM I. </s>

<s id="id.2.1.77.4.1.1.0">Ex hoc etiam (vt prius) manifeſtum eſſe po<lb/>teſt, ſi ponatur pondus E propius fulcimento B, <lb/>vt in H; minorem potentiam in A ſuſtinere poſ<lb/>ſe ipſum pondus. </s>

<s id="id.2.1.77.4.1.1.0">Ex hoc etiam (vt prius) manife&longs;tum e&longs;&longs;e po<lb/>te&longs;t, &longs;i ponatur pondus E propius fulcimento B, <lb/>vt in H; minorem potentiam in A &longs;u&longs;tinere po&longs;<lb/>&longs;e ip&longs;um pondus. </s>

<s id="id.2.1.77.5.1.1.0">Minorem enim proportionem habet HB ad BA, quam CB ad <arrow.to.target n="note132" xlink:type="simple"/>

<s id="id.2.1.77.5.1.1.0">Minorem enim proportionem habet HB ad BA, quam CB ad <arrow.to.target n="note132"></arrow.to.target><lb/>BA. </s>

<s>& quò propius pondus erit fulcimento, adhuc &longs;emper mino <lb/>rem po&longs;&longs;e potentiam &longs;u&longs;tinere pondus E &longs;imiliter o&longs;tendetur. </s>

<s id="N12B56">& quò propius pondus erit fulcimento, adhuc ſemper mino <lb/>rem poſſe potentiam ſuſtinere pondus E ſimiliter oſtendetur. </s>

<s id="id.2.1.78.1.1.1.0"><margin.target id="note132"></margin.target>8 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note132"/>8 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.79.1.1.1.0">COROLLARIVM II. </s>

<s id="id.2.1.79.2.1.1.0">Sequitur etiam potentiam in A ſemper mino <lb/>rem eſſe pondere E. </s>

<s id="id.2.1.79.2.1.1.0">Sequitur etiam potentiam in A &longs;emper mino <lb/>rem e&longs;&longs;e pondere E. </s>

<s id="id.2.1.79.3.1.1.0">Sumatur enim inter AB quoduis punctum C, ſemper BC <lb/>minor erit BA. </s>

<s id="id.2.1.79.3.1.1.0">Sumatur enim inter AB quoduis punctum C, &longs;emper BC <lb/>minor erit BA. </s>

<s id="id.2.1.79.5.1.1.0">COROLLARIVM III. </s>

<s id="id.2.1.79.6.1.1.0">Ex hoc quoq; elici poteſt, ſi duæ fuerint poten<lb/>tiæ, vna in A, altera in B, & vtraq; ſuſtentet <lb/>pondus E; potentiam in A ad potentiam in B eſ<lb/>ſe, vt BC ad CA. </s>

<s id="id.2.1.79.6.1.1.0">Ex hoc quoq; elici pote&longs;t, &longs;i duæ fuerint poten<lb/>tiæ, vna in A, altera in B, & vtraq; &longs;u&longs;tentet <lb/>pondus E; potentiam in A ad potentiam in B e&longs;<lb/>&longs;e, vt BC ad CA. </s>

<s id="id.2.1.79.7.1.1.0">Vectis enim BA fungi<lb/>tur officio duorum <expan abbr="vectiũ">vectium</expan>; <lb/>& AB ſunt tanquam duo <lb/>fulcimenta, hoc eſt quan<lb/>do AB eſt vectis, & poten<lb/>tia ſuſtinens in A; erit eius <lb/>

<s id="id.2.1.79.7.1.1.0">Vectis enim BA fungi<lb/>tur officio duorum <expan abbr="vecti&utilde;">vectium</expan>; <lb/>& AB &longs;unt tanquam duo <lb/>fulcimenta, hoc e&longs;t quan<lb/>do AB e&longs;t vectis, & poten<lb/>tia &longs;u&longs;tinens in A; erit eius <lb/><figure id="id.036.01.094.1.jpg" xlink:href="036/01/094/1.jpg"></figure><lb/>fulcimentum B. </s>

<s id="id.2.1.79.7.1.1.0.a">Quando verò BA e&longs;t vectis, & potentia in B; <lb/>erit A fulcimentum: & pondus &longs;emper ex puncto C remanet &longs;u<lb/>&longs;pen&longs;um. </s>

<lb/>fulcimentum B. </s>

<s id="id.2.1.79.7.1.2.0">& quoniam potentia in A ad pondus E e&longs;t, vt BC ad <lb/>BA; vt autem pondus E ad potentiam, quæ e&longs;t in B, ita e&longs;t <lb/><arrow.to.target n="note133"></arrow.to.target>BA ad AC; erit ex æquali, potentia in A ad potentiam in B, vt <lb/>BC ad CA. </s>

<s id="id.2.1.79.7.1.1.0.a">Quando verò BA eſt vectis, & potentia in B; <lb/>erit A fulcimentum: & pondus ſemper ex puncto C remanet ſu<lb/>ſpenſum. </s>

<s>& hoc modo facilè etiam proportionem, quæ in <lb/>Quæ&longs;tionibus Mechanicis quæ&longs;tione vige&longs;ima nona ab Ari&longs;totele <lb/>ponitur, noui&longs;&longs;e poterimus. </s>

<s id="id.2.1.79.7.1.2.0">& quoniam potentia in A ad pondus E eſt, vt BC ad <lb/>BA; vt autem pondus E ad potentiam, quæ eſt in B, ita eſt <lb/>

<arrow.to.target n="note133" xlink:type="simple"/>BA ad AC; erit ex æquali, potentia in A ad potentiam in B, vt <lb/>BC ad CA. </s>

<s id="N12BC1">& hoc modo facilè etiam proportionem, quæ in <lb/>Quæſtionibus Mechanicis quæſtione vigeſima nona ab Ariſtotele <lb/>ponitur, nouiſſe poterimus. </s>

<s id="id.2.1.80.1.1.1.0"><margin.target id="note133"></margin.target>22 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note133"/>22 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.81.1.1.1.0">COROLLARIVM IIII. </s>

<s id="id.2.1.81.2.1.1.0">Eſt etiam manifeſtum, vtraſq; potentias in A, <lb/>& B ſimul ſumptas æquales eſſe ponderi E. </s>

<s id="id.2.1.81.2.1.1.0">E&longs;t etiam manife&longs;tum, vtra&longs;q; potentias in A, <lb/>& B &longs;imul &longs;umptas æquales e&longs;&longs;e ponderi E. </s>

<s id="id.2.1.81.3.1.1.0">Pondus enim E ad potentiam in A eſt, vt BA ad BC; & idem <lb/>pondus E ad potentiam in B eſt, vt BA ad AC; quare pondus <lb/>E ad vtraſq; potentias in A, & B ſimul ſumptas eſt, vt AB ad BC <lb/>CA ſimul, hoc eſt ad BA. </s>

<s id="id.2.1.81.3.1.1.0">Pondus enim E ad potentiam in A e&longs;t, vt BA ad BC; & idem <lb/>pondus E ad potentiam in B e&longs;t, vt BA ad AC; quare pondus <lb/>E ad vtra&longs;q; potentias in A, & B &longs;imul &longs;umptas e&longs;t, vt AB ad BC <lb/>CA &longs;imul, hoc e&longs;t ad BA. </s>

<s id="N12BEE">pondus igitur E vtriſq; potentiis ſimul <lb/>ſumptis æquale erit. </s>

<s>pondus igitur E vtri&longs;q; potentiis &longs;imul <lb/>&longs;umptis æquale erit. </s>

<s id="id.2.1.81.5.1.1.0">PROPOSITIO III. </s>

<s id="id.2.1.81.6.1.1.0">Alio quoq; modo vecte vti poſsumus. </s>

<s id="id.2.1.81.6.1.1.0">Alio quoq; modo vecte vti po&longs;sumus. </s>

<s id="id.2.1.81.7.1.1.0">Sit Vectis AB, <lb/>cuius fulcimentum <lb/>B; ſitq; ex puncto <lb/>A pondus C appen<lb/>ſum; ſitq; potentia <lb/>in D vtcunq; inter <lb/>AB ſuſtinens pon<lb/>dus C. </s>

<s id="id.2.1.81.7.1.1.0">Sit Vectis AB, <lb/>cuius fulcimentum <lb/>B; &longs;itq; ex puncto <lb/>A pondus C appen<lb/>&longs;um; &longs;itq; potentia <lb/>in D vtcunq; inter <lb/>AB &longs;u&longs;tinens pon<lb/>dus C. </s>

<s id="id.2.1.81.7.1.1.0.a">Dico vt AB <lb/><figure id="id.036.01.095.1.jpg" xlink:href="036/01/095/1.jpg"></figure><lb/>ad BD, ita e&longs;&longs;e potentiam in D ad pondus C. </s>

<s id="id.2.1.81.7.1.1.0.b">Appendatur ex <lb/>puncto D pondus E æquale ip&longs;i C; & vt BD ad BA, ita fiat pon<lb/>dus E ad aliud F. </s>

<lb/>ad BD, ita eſſe potentiam in D ad pondus C. </s>

<s>& cùm pondera CE &longs;int inter &longs;e &longs;e æqualia; erit <lb/>pondus C ad pondus F, vt BD ad BA. </s>

<s id="id.2.1.81.7.1.1.0.b">Appendatur ex <lb/>puncto D pondus E æquale ipſi C; & vt BD ad BA, ita fiat pon<lb/>dus E ad aliud F. </s>

<s id="N12C28">& cùm pondera CE ſint inter ſe ſe æqualia; erit <lb/>pondus C ad pondus F, vt BD ad BA. </s>

<s id="id.2.1.81.7.1.1.0.c">appendatur pondus <lb/>F quoq; in D. </s>

<s id="id.2.1.81.7.1.1.0.d">& quoniam pondus E ad ipſum F eſt, vt grauitas <lb/>ponderis E ad grauitatem ponderis F; & pondus E ad pondus F <arrow.to.target n="note134" xlink:type="simple"/>

<s id="id.2.1.81.7.1.1.0.d">& quoniam pondus E ad ip&longs;um F e&longs;t, vt grauitas <lb/>ponderis E ad grauitatem ponderis F; & pondus E ad pondus F <arrow.to.target n="note134"></arrow.to.target><lb/>e&longs;t, vt BD ad BA: vt igitur grauitas ponderis E ad grauitatem <lb/>ponderis F, ita e&longs;t BD ad BA. </s>

<lb/>eſt, vt BD ad BA: vt igitur grauitas ponderis E ad grauitatem <lb/>ponderis F, ita eſt BD ad BA. </s>

<s>vt autem BD ad BA, ita e&longs;t gra<arrow.to.target n="note135"></arrow.to.target><lb/>uitas ponderis E ad grauitatem ponderis C; quare grauitas ponde<lb/>ris E ad grauitatem ponderis F eandem habet proportionem, <lb/>quam habet ad grauitatem ponderis C. pondera ergo CF eandem <arrow.to.target n="note136"></arrow.to.target><lb/>habent grauitatem. </s>

<s id="N12C3D">vt autem BD ad BA, ita eſt gra<arrow.to.target n="note135" xlink:type="simple"/>

<s id="id.2.1.81.7.1.2.0">&longs;it igitur potentia in D &longs;u&longs;tinens pondus F, <lb/>erit potentia in D ip&longs;i ponderi F æqualis. </s>

<lb/>uitas ponderis E ad grauitatem ponderis C; quare grauitas ponde<lb/>ris E ad grauitatem ponderis F eandem habet proportionem, <lb/>quam habet ad grauitatem ponderis C. pondera ergo CF eandem <arrow.to.target n="note136" xlink:type="simple"/>

<s id="id.2.1.81.7.1.3.0">& quoniam pondus F <lb/>in D æquè graue e&longs;t, vt pondus C in A; habebit potentia in D <lb/>eandem proportionem ad grauitatem ponderis F, quam habet ad <arrow.to.target n="note137"></arrow.to.target><lb/>grauitatem ponderis C. </s>

<lb/>habent grauitatem. </s>

<s id="id.2.1.81.7.1.3.0.a">&longs;ed potentia in D pondus F &longs;u&longs;tinet; po<lb/>tentia igitur in D pondus quoq; C &longs;u&longs;tinebit: & pondus C ad po<lb/>tentiam in D ita erit, vt pondus C ad pondus F; & C ad F e&longs;t, vt <lb/>BD ad BA; erit igitur pondus C ad potentiam in D, vt BD ad <lb/>BA: & conuertendo, vt AB ad BD, ita potentia in D ad pondus <lb/>C. </s>

<s id="id.2.1.81.7.1.2.0">ſit igitur potentia in D ſuſtinens pondus F, <lb/>erit potentia in D ipſi ponderi F æqualis. </s>

<s id="id.2.1.81.7.1.3.0.b">potentia ergo ad pondus e&longs;t, vt di&longs;tantia à fulcimento ad pon<lb/>deris &longs;u&longs;pendium ad di&longs;tantiam à fulcimento ad potentiam. </s>

<s id="id.2.1.81.7.1.3.0">& quoniam pondus F <lb/>in D æquè graue eſt, vt pondus C in A; habebit potentia in D <lb/>eandem proportionem ad grauitatem ponderis F, quam habet ad <arrow.to.target n="note137" xlink:type="simple"/>

<s id="id.2.1.81.7.1.4.0">quod <lb/>demon&longs;trare oportebat. </s>

<lb/>grauitatem ponderis C. </s>

<s id="id.2.1.81.7.1.3.0.a">ſed potentia in D pondus F ſuſtinet; po<lb/>tentia igitur in D pondus quoq; C ſuſtinebit: & pondus C ad po<lb/>tentiam in D ita erit, vt pondus C ad pondus F; & C ad F eſt, vt <lb/>BD ad BA; erit igitur pondus C ad potentiam in D, vt BD ad <lb/>BA: & conuertendo, vt AB ad BD, ita potentia in D ad pondus <lb/>C. </s>

<s id="id.2.1.81.7.1.3.0.b">potentia ergo ad pondus eſt, vt diſtantia à fulcimento ad pon<lb/>deris ſuſpendium ad diſtantiam à fulcimento ad potentiam. </s>

<s id="id.2.1.81.7.1.4.0">quod <lb/>demonſtrare oportebat. </s>

<s id="id.2.1.82.1.1.1.0"><margin.target id="note134"></margin.target><emph type="italics"/>In &longs;exta huius de libra.<emph.end type="italics"/></s>

<margin.target id="note134"/>

<s id="id.2.1.82.1.1.2.0"><margin.target id="note135"></margin.target>6 <emph type="italics"/>Huius de libra.<emph.end type="italics"/></s>

<emph type="italics"/>In ſexta huius de libra.<emph.end type="italics"/>

<s id="id.2.1.82.1.1.3.0"><margin.target id="note136"></margin.target>9 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

</s>

<s id="id.2.1.82.1.1.4.0"><margin.target id="note137"></margin.target>7 <emph type="italics"/>Quinti.<emph.end type="italics"/></s>

<margin.target id="note135"/>6 <emph type="italics"/>Huius de libra.<emph.end type="italics"/>

</s>

<margin.target id="note136"/>9 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<margin.target id="note137"/>7 <emph type="italics"/>Quinti.<emph.end type="italics"/>

</s>

<s id="id.2.1.83.1.2.1.0">ALITER. </s>

</figure>

<s id="id.2.1.83.2.1.1.0">Sit vectis AB, cuius fulcimentum B; & ex puncto A ſit pon<lb/>dus C ſuſpenſum; ſitq; potentia in D ſuſtinens pondus C. </s>

<s id="id.2.1.83.2.1.1.0">Sit vectis AB, cuius fulcimentum B; & ex puncto A &longs;it pon<lb/>dus C &longs;u&longs;pen&longs;um; &longs;itq; potentia in D &longs;u&longs;tinens pondus C. </s>

<s id="id.2.1.83.2.1.1.0.a">Dico <lb/>vt AB ad BD, ita eſſe potentiam in D ad pondus C. </s>

<s id="id.2.1.83.2.1.1.0.a">Dico <lb/>vt AB ad BD, ita e&longs;&longs;e potentiam in D ad pondus C. </s>

<s id="id.2.1.83.2.1.1.0.b">Produca<lb/>tur AB in E, fiatq; BE æqualis ipſi BA; & ex puncto E appen<lb/>datur pondus F æquale ponderi C; & vt BD ad BE, ita fiat pon<lb/>dus F ad aliud G, quod ex puncto D ſuſpendatur. </s>

<s id="id.2.1.83.2.1.1.0.b">Produca<lb/>tur AB in E, fiatq; BE æqualis ip&longs;i BA; & ex puncto E appen<lb/>datur pondus F æquale ponderi C; & vt BD ad BE, ita fiat pon<lb/>dus F ad aliud G, quod ex puncto D &longs;u&longs;pendatur. </s>

<s id="id.2.1.83.2.1.2.0">pondera FG <lb/>æqueponderabunt. </s>

<s id="id.2.1.83.2.1.3.0">& quoniam AB eſt æqualis BE, & pondera <lb/>FC æqualia; ſimiliter pondera FC æqueponderabunt. </s>

<s id="id.2.1.83.2.1.3.0">& quoniam AB e&longs;t æqualis BE, & pondera <lb/>FC æqualia; &longs;imiliter pondera FC æqueponderabunt. </s>

<s id="id.2.1.83.2.1.4.0">Pondera <lb/>verò FGC ſuſpenſa in vecte EBA, cuius fulcimentum eſt B, non <lb/>æqueponderabunt; ſed ex parte A deorſum tendent. </s>

<s id="id.2.1.83.2.1.4.0">Pondera <lb/>verò FGC &longs;u&longs;pen&longs;a in vecte EBA, cuius fulcimentum e&longs;t B, non <lb/>æqueponderabunt; &longs;ed ex parte A deor&longs;um tendent. </s>

<s id="id.2.1.83.2.1.5.0">Ponatur igi<lb/>tur in D tanta vis, vt pondera FGC æqueponderent; erit po<lb/>tentia in D æqualis ponderi G: pondera enim FC æqueponde<lb/>rant, & potentia in D nil aliud efficere debet, niſi ſuſtinere pon<lb/>dus G ne deſcendat. </s>

<s id="id.2.1.83.2.1.6.0">& quoniam pondera FGC, & potentia in <lb/>D æqueponderant, demptis igitur FG ponderibus, quæ æquepon<lb/>derant; reliqua æqueponderabunt, ſcilicet potentia in D ponderi C. <lb/>

<s id="id.2.1.83.2.1.6.0">& quoniam pondera FGC, & potentia in <lb/>D æqueponderant, demptis igitur FG ponderibus, quæ æquepon<lb/>derant; reliqua æqueponderabunt, &longs;cilicet potentia in D ponderi C. <lb/></s>

</s>

<s>hoc e&longs;t potentia in D pondus C &longs;u&longs;tinebit, ita vt vectis AB ma<lb/>neat, vt prius. </s>

<s id="N12CE8">hoc eſt potentia in D pondus C ſuſtinebit, ita vt vectis AB ma<lb/>neat, vt prius. </s>

<s id="id.2.1.83.2.1.7.0">& cùm potentia in D &longs;it æqualis ponderi G, & pon<lb/>dus C æquale ponderi F; habebit potentia in D ad pondus C ean<lb/>dem proportionem, quam EB, hoc e&longs;t AB ad BD. quod de<lb/