Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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tiam, parum aut nihil conantur reſpectu huius lationis ſe
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cundum naturam; ſed mouent ipſum, veluti motum ab in
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trinſeco propter explicatam propenſionem, quam habet
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ad eandem lationem. </
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<
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ſum, quo ex ſe illud naturaliter tendit. </
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<
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id
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N14230
">Solùm igitur impel
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lentes circulum conantur, ac mouent illum ſecundum la
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tionem obliquam, quæ eſt præter naturam, & ad quam ipſe
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circulus non habet nutum ſiue inclinationem. </
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<
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id
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">Quod eſt fa
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cillimè circularia ipſa corpora à mouentibus moueri. </
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<
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">Nam
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ſimpliciter loquendo de motione miſta, quæ ex ijs duabus
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lationibus reſultat, mouentur quaſi à ſe ipſis. </
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<
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">Vtitur autem Ariſtoteles illis verbis: ſecundum verò il
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lam (ſcilicet motionem) quæ ſupra diametrum eſt, ſe ipſum
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mouet circulus: ad connotandam ipſam motionem miſtam,
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ac circularem reſultantem ex duabus lationibus explicatis.
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</
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<
s
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N14251
">Quam quidem ſuper diametrum quadrilateri exemplifica
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uerat in principio, non ſeruata tamen eadem proportione
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Quod non abs re fuerit in hac figura palam exprimere. </
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<
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">Sit enim circulus ABCD
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circa centrum E, cuius ſemi
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diameter EC. </
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<
s
id
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N14267
">A qua excite
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tur quadratum ECFD.
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expan
abbr
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Sitq.
">Sitque</
expan
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diameter quadrati recta CD.
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</
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<
s
id
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">Dico igitur quod ſi punctum
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C, quod eſt extremum ſemi
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diametri, moueri debeat
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expan
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vſq;
">vſque</
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ad D, circa immotum
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centrũ
">centrum</
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E, nullo ferè conatu mouen
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tis mouebitur per arcum, cui
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ſubtenditur recta CD.
<
expan
abbr
="
Eo-demq.
">Eo
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demque</
expan
>
tempore ipſum D transferetur in A; ſicut etiam
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A in B, & B vbi nunc eſt punctum C: quod eſt, totum
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circulum nullo, aut paruo negotio, à mouente circulariter
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moueri. </
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<
s
id
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N14297
">Cum enim punctum C per lationem ſecundum
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naturam, ad quam ex ſe habet nutum, & propenſio
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nem, qualibet exigua vi moueatur verſus F; per latio-</
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