Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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renniter moueretur; partim ſcilicet à grauitate, ac partim
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à virtute impreſſa, perſeuerante ſemper grauitate cum tali
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virtute impulſiua. </
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<
expan
abbr
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Dicendũ
">Dicendum</
expan
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tàmen eſt, corpus
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expan
abbr
="
prædictũ
">prædictum</
expan
>
<
expan
abbr
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ſtatimatq.
">ſtatim atque</
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relinqui
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tur in ſua libertate
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expan
abbr
="
deſcẽdere
">deſcendere</
expan
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ex vi propriæ grauitatis ea via
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lb
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qua poteſt, nempe obliquè per arcum,
<
expan
abbr
="
deſcribẽdo
">deſcribendo</
expan
>
<
expan
abbr
="
portionẽ
">portionem</
expan
>
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lb
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circumferentiæ circa punctum, in quo funis eſt religatus
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lb
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tanquam circa centrum: Per hunc autem deſcenſum impe
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tum quendam in ſe ab eodem corpore produci, quod cum
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vlterius deorſum tendere nequeat ob funis detentionem,
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quaſi reſilire cogitur, ac denuò ſurſum attolli per oppoſitum
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lb
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arcum ſeu viam, ita vt corpus poſtquam à dextris deſcendit
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per grauitatem; aſcendit ad læuam per impetum, quo lan
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gueſcente, ac deſinente rurſus per eandem viam corpus ip
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ſum grauitate vrgente deſcendat: Per quem deſcenſum
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nouus impetus producitur ad nouum aſcenſum perficien
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dum, & ſic deinceps. </
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<
s
id
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N17A5D
">Quoniam verò corpus ipſùm per im
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petum in ſe media grauitate productum, nunquam poteſt
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tantum aſcendere, quantum per ipſam grauitatem deſcen
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dit ob reſiſtentiam, quam reperit in aſcenſu ſecus ac in de
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ſcenſu: hinc eſt, vt ſecundus deſcenſus per minorem arcum
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etiam fiat, per
<
expan
abbr
="
eumq.
">eumque</
expan
>
minor impetus producatur, quàm per
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lb
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primum; ex quo minori impetu adhuc minor conſtituatur
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alius aſcenſus, ac deſcenſus, & ſic paulatim per minores, ac
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minores arcus corpus ipſum dimoueatur, quouſque penitus
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quieſcat in puncto explicato. </
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<
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">Quæſtio Trigeſimatertia.</
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vr quippiam non peculiarem ſibi fertur la
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tionem, impulſore alioquin non conſequenter?</
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<
s
id
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N17A82
">An videlicet quoniam primum id efficit, vt
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alterum impellat:
<
expan
abbr
="
illudq.
">illudque</
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>
rurſum vt alte
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rum? </
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<
s
id
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">Ce<32>at autem quando non poteſt am
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plius facere primum impelleat, id quod
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