Fabri, Honoré
,
Tractatus physicus de motu locali
,
1646
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titatis; </
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<
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id
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">cum reuerâ, vt dictum eſt ſuprà, remiſſus producat intenſum,
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quod in vecte clariſſimum eſt; </
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<
s
id
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N142EF
">quippe momentum applicatum in F, quod
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tardiùs mouetur deorſum, quàm B, ſurſum, vt patet, habet impetum re
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miſſiorem, qui tamen producit in B, intenſiorem: </
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<
s
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N142F7
">Pro quo, obſeruabis
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impetum imperfectum cum alio perfecto actione communi agentem
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poſſe concurrere ad producendum perfectum, vt patet; </
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<
s
id
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">non tamen in
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ratione cauſæ totalis: </
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<
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id
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">ſimiliter plures imperfecti ſimul concurrentes
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poſſunt producere perfectum; quia plures imperfecti conjunctim adæ
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quant perfectionem alterius perfectioris ſinguli ſeorſim. </
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</
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<
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<
s
id
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">Obſeruabis ſecundò præclarum naturæ inſtitutum, quo factum eſt; </
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vt cum vires hominum maiora pondera leuare non poſſint, ſi ſeorſun
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conſiderentur; </
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<
s
id
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N1431A
">cum organis tamen mechanicis conjunctæ nullum pon
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dus quantumuis immane leuare non poſſint; </
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<
s
id
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N14320
">quod certè nullo modo ac
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cideret, niſi plures partes impetus producerent neque plures producere
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poſſent, niſi minoris perfectionis eſſent; quia faciliùs producitur effe
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ctus imperfectus, quam perfectus per Ax. 13.num.4. </
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<
s
id
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">Tertiò hinc optimè à natura prouiſum eſt, vt motus tardior in infi
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nitum eſſe poſſit; quod reuerâ fieri non poſſet, niſi dari poſſet impetus
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alio imperfectior. </
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</
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<
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<
s
id
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">Quartò, hinc quoque benè explicatur diuerſitas impetus, quæ oritur
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tum à diuerſo medio, tùm à plano inclinato, tùm ab aliis impedimentis,
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tùm à diuerſo niſu eiuſdem potentiæ, tùm maximè à diuerſo applicatio
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nis modo; de quibus aliàs. </
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>
</
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<
s
id
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">Quintò, ſi potentia applicata mobili immediatè illud moueat motu
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recto, vel in ſingulis punctis mobilis producitur vnum punctum impe
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tus, vel plura; </
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>
<
s
id
="
N1434A
">ſi primum, erit primus tantùm gradus maximæ perfectio
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nis; </
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>
<
s
id
="
N14350
">ita vt perfectiorem producere non poſſit, ad quem eſt determinata
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potentia; </
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>
<
s
id
="
N14356
">imperfectiorem tamen impetu innato, de quo infrà; ſi verò
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ſecundum, producet in ſingulis partibus
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">eundem</
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gradum perfectiſſi
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mum cum aliis pluribus, vel paucioribus heterogeneis, & imperfectio
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ribus. </
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<
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<
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Theorema
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86.
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Potentia naturalis grauium producit tantùm vno inſtanti ad intra vnicum
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punctum impetus in quolibet puncto ſubiecti; </
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>
<
s
id
="
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">ſi tamen impetum producit, quod
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definiam lib.
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="
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20.
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& ſi dentur puncta ſubiecti, quod ad præſens inſtitutum non
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pertinet
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; </
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>
<
s
id
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N1438D
">Probatur, quia fruſtrà eſſent plura puncta impetus; nec enim
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ſunt multiplicandæ formæ ſine neceſſitate, ratione &c. </
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>
<
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id
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">per Ax. 7. & 3.
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n. </
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<
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">1. Præterea non eſt, cur potius produceret 2. quàm 3. 4. &c. </
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<
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id
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">atqui
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quod vnum eſt, determinatum eſt per Ax. 5. </
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<
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Theorema
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87.
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Potentia motrix animantium etiam vno inſtanti plura puncta, ſen partes
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impetus in eadem parte ſubiecti producere potest
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; </
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<
s
id
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">Probatur in proiectis,
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quorum impetus aliquando plùs, aliquando minùs durat licèt ſenſim
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ſingulis inſtantibus aliquid illius deſtruatur; </
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<
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">determinatur autem </
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