Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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<
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id
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N10019
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id
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N16FCF
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main
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<
s
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="
N17004
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<
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pagenum
="
238
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xlink:href
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005/01/246.jpg
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id
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xlink:href
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Quod vt præ ocu
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lis habeatur eſto
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lignum AB, pon
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dus C appenſum
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in D proximius
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ipſi A; baiulorum
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verò alter hume
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rum, vel manum
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ſupponat in A; al
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ter in B. </
s
>
<
s
id
="
N1702E
">Dicimus ergo cum Ariſtotele, lignum ipſum AB,
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lb
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vectem conſtitui ſuffultum in D, tanquam fulcimento in
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uerſo ad deprimendum humerum aſportantis in A, per mo
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tum aſportantis in B, qui baiulando, ſemper eleuare cona
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tur extremitatem ſibi incumbentem in B. </
s
>
<
s
id
="
N17039
">Quandoquidem
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punctum D, quod conſtituitur centrum in motione ipſius
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vectis, ita à pendente pondere præmitur, & figitur, ac ſi im
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mobile omnino eſſet ad fulciendum ipſum vectem. </
s
>
<
s
id
="
N17042
">Quod
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lb
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euidentius fiet ſi eundem vectem inuerſo modo conſidere
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id.005.01.246.2.jpg
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xlink:href
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mus, in ſequenti fi
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gura; Nimirum vt
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ſi vectis A B ſu
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ſpendatur in C ex
<
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puncto intermedio
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vbi D, ad eleuan
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dum onus impo
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ſitum in extremo A
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per depreſsionem alterius extremi B. </
s
>
<
s
id
="
N1705F
">His namque po
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lb
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ſitis ad primam figuram redeuntes facilè intelligitur cur
<
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baiulus geſtans in A magis grauetur à pondere C,
<
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quàm geſtans in B. </
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>
<
s
id
="
N17068
">Quanto enim longior eſt pars vectis
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DB, ipſa DA, eo facilius geſtans in B eleuat, vel ſuſti
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net ipſum extremum B reſpectu ſuſtinentis in A tanquam
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in loco centro vectis propinquiori quàm ſit ipſum B. </
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>
</
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<
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<
s
id
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N17073
">Quod autem cum Ariſtotele explicuimus per rationem
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vnius vectis, Piccolomineus explicat per rationem duplicis </
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