Fabri, Honoré
,
Tractatus physicus de motu locali
,
1646
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<
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pagenum
="
26
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xlink:href
="
026/01/058.jpg
"/>
ſeorſim producere poteſt. </
s
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</
p
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<
p
id
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N12BF6
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<
s
id
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">Dices ſi vterque coniunctim producit effectum: </
s
>
<
s
id
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N12BFC
">ſint v. g. 100. par
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lb
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tes impetus; Igitur ſinguli producunt tantùm 50. Igitur cur potiùs in
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lb
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in his partibus ſubiecti, quàm in alijs, cum vtriuſque potentia eidem
<
lb
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ſubiecti parti poſſet eſſe applicata? </
s
>
<
s
id
="
N12C0A
">Reſpondeo ſingulos producere 100.
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lb
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actione ſcilicet communi indiuiſibiliter; </
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>
<
s
id
="
N12C10
">ſint enim duo trahentes A. &
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B. A. producit 100. ſed non ſolus; </
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>
<
s
id
="
N12C16
">B. producit eaſdem 100. ſed non ſo
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lus; ſed explicabimus hunc modum actionis communis in Metaphys.
<
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quod autem agant actione communi patet per Ax. 13. </
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>
</
p
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<
p
id
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type
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">
<
s
id
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N12C21
">Obiicies 4. producitur ſonus ſi ferias rupem; </
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>
<
s
id
="
N12C25
">igitur & impetus; </
s
>
<
s
id
="
N12C29
">Reſ
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lb
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pondeo ad ſonum ſolam aëris colliſionem ſufficere, quam fieri certum
<
lb
/>
eſt à prædicto ictu; </
s
>
<
s
id
="
N12C31
">deinde mallej motus impacti in rupem facit ſonum; </
s
>
<
s
id
="
N12C35
">
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lb
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quidquid tandem ſit ſonus, de quo hîc non diſputo: </
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>
<
s
id
="
N12C3A
">adde quod in ru
<
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/>
pe ſunt ſemper aliquæ partes tremulæ, quæ modico tantùm, eoque flexi
<
lb
/>
bili nexu cum alijs partibus copulantur; adde aliquam compreſſionem,
<
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ex qua modicæ vibrationes ſequuntur. </
s
>
</
p
>
<
p
id
="
N12C44
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type
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<
s
id
="
N12C46
">Obiicies 5. Quando aliquæ partes auolant ab ictu, haud dubiè auo
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lant propter impetum impreſſum: </
s
>
<
s
id
="
N12C4C
">Igitur prius eſt imprimi impetum,
<
lb
/>
quàm auolare; igitur productus eſt impetus in nonnullis partibus, &
<
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non in aliis, cum quibus illæ ſunt coniunctæ. </
s
>
<
s
id
="
N12C54
">Reſpondeo equidem im
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lb
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petum produci in illis partibus antequam auolent; </
s
>
<
s
id
="
N12C5A
">ſed ideo produci vt
<
lb
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deinde auolent nam tota ratio cur non producatur, eſt ne ſit fruſtrà; </
s
>
<
s
id
="
N12C60
">ſed
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lb
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ſi auolent aliquæ partes: certè in ijs non eſt fruſtrà, in quibus habet
<
lb
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ſuum effectum, id eſt, motum. </
s
>
</
p
>
<
p
id
="
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type
="
main
">
<
s
id
="
N12C6A
">Dices; </
s
>
<
s
id
="
N12C6D
">igitur primo inſtanti impetus ille eſt fruſtrà; </
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>
<
s
id
="
N12C71
">in quo non
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habet ſuum effectum; </
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>
<
s
id
="
N12C77
">Reſpondeo nunquam primo inſtanti eſſe fruſtrà,
<
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modò ſit motus ſecundo cum etiam primo inſtanti, quo eſt impetus,
<
lb
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non poſſit eſſe motus, vt demonſtrabo infrà; immò ideo ponitur im
<
lb
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petus primo vt ſit motus ſecundo exigendo pro inſtant ſequenti, de
<
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cum impetus ponat tantùm motum quo aliàs. </
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>
</
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>
<
p
id
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type
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<
s
id
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N12C85
">Dices; </
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>
<
s
id
="
N12C88
">ſed potentia motrix neſcit an poſſit pars aliqua mobilis ſepa
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rari; igitur non eſt quòd aliquando producat impetum, aliquando
<
lb
/>
non producat. </
s
>
<
s
id
="
N12C90
">Reſpondeo non ſtare per cauſam neceſſariam, quin ſem
<
lb
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per agat; </
s
>
<
s
id
="
N12C96
">ſed per ſubiectum, quod ſi aptum eſt, & capax effectus; </
s
>
<
s
id
="
N12C9A
">haud
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dubiè eo ipſo cauſa neceſſaria applicata in ipſum aget; ſi verò ineptum. </
s
>
<
s
id
="
N12CA0
">
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haud dubiè non aget; </
s
>
<
s
id
="
N12CA4
">nam ad hoc vt producatur effectus in ſubiecto; </
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>
<
s
id
="
N12CA8
">
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non ſatis eſt cauſam poſſe producere, niſi etiam ſubiectum poſſit recipe
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re; </
s
>
<
s
id
="
N12CAF
">igitur cum ſit talis ordo à natura inſtitutus, ne aliquid ſit fruſtrà; </
s
>
<
s
id
="
N12CB3
">
<
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certè ſi impetus producibilis ſit futurus fruſtrà, hauddubiè non produ
<
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/>
cetur; ſecus verò ſi fruſtrà non ſit futurus, in quo non eſt difficultas. </
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>
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type
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<
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Scholium.
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</
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</
p
>
<
p
id
="
N12CC8
"
type
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main
">
<
s
id
="
N12CCA
">Obſeruabis 1. vix fieri poſſe quin ſemper aliquæ partes ſeparentur,
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comprimantur, vel dilatentur, vt patet experientiâ. </
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>
</
p
>
<
p
id
="
N12CCF
"
type
="
main
">
<
s
id
="
N12CD1
">Obſeruabis 2. etiam maximam corporis molem à debili potentia mi-</
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>
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</
chap
>
</
body
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</
text
>
</
archimedes
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