Monantheuil, Henri de
,
Aristotelis Mechanica
,
1599
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tur, ratio adducitur ſumpta ab efficiente circuli cauſa. </
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giſmus inſtitui poteſt. </
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Fit circulus à linea continenter mota circa fixum extremorum
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vnum, quouſque redeat ad eum locum vnde moueri cœpit, quod
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fieri non poteſt niſi per loca quæ ſunt circa extremum fixum oppoſi
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ta deducatur, & quod eſt vltimum, rurſus fiat primum.
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Ergo circulus mouetur per loca è diametro oppoſita circa extre
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mum lineæ à qua fit fixum. </
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">Quia igitur in his ſunt antè & ponè,
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mouebitur antè & ponè: quia inſuper ſunt ſurſum & deorſum,
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mouebitur etiam ſimul ſurſum & deorſum.
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Centrum enim in plano circundatur quatuor loci differentijs,
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propter duas quæ in ipſo ad rectos ſe ſecant dimenſiones, vt in circu
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lo B C D E, eſto linea fabricans ipſum A B, ibique eſto ante
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B. </
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>igitur cum erit in D, erit ponè: & cum in C, ſurſum: &
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in E, deorſum, & perueniens ad A B, eidem loco reſtituetur,
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à quo cœperat moueri, quod eſt vltimum
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fieri primum. </
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">Vnde cum circulus moue
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tur, poteſt dici ire, & reuerti ſimul: ſic
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cum ſphæricum corpus mouetur, in fine
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ſemper, & principio motus ſui, etiam tum
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ire, tum reuerti veriſimiliter dicetur.
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Cæterum notandum quod motiones dictæ
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eſſe in circulo, inſunt quidem: ſed non ſi
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mul ſecundum eandem partem. </
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">Nam cum B, mouetur ſurſum ver
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ſus C, idem B, eodem tempore non fertur deorſum verſus E, ſed
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tunc quidem D, altera pars in circulo oppoſita ipſi B, fertur ver
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ſus E: vt autem verè eſſent motiones contrariæ deberent fieri ſe
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cundum eaſdem partes. </
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">Eſt hæc igitur vt aliæ in circulo non vera
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ſed apparens repugnantia. </
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ctuum poſtea cauſæ repetuntur, cum diametri B D, vt inflexilis
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circa A, centrum fixum motæ, ſi B, deprimatur, neceſſe eſt alte
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rum extremum D, attolli: & contra.
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">Propterea vt eſt prius.]
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Concluſio generalis eſt, huc, vt exi
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ſtimo, è fine primi huius capitis, vbi melius collocaretur,
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,
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quod amplius declarant ea, quæ ſubijciuntur de vecte & libra, ad
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quæ cum referat omnia Mechanica, & ipſa vectis & libra referan
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