DelMonte, Guidubaldo, Mechanicorvm Liber

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1trochleæ religato, altero verò à potentia pon­
dus ſuſtinente retento: erit potentia ponderis
ſubquintupla.
Sit pondus A, cui alligata ſit trochlea duos
habens orbiculos, quorum centra ſint BC;
ſitq; trochlea ſurſum appenſa duos alios ha­
bens orbiculos, quorum centra ſint DE; funiſq;
per omnes circumducatur orbiculos, qui tro­
chleæ inferiori religetur in F; ſit〈qué〉 poten
tia in G ſuſtinens pondus A.
dico poten­
tiam in G ſubquintuplam eſſe ponderis A.
ducantur Hk LM per centra BC horizon­
ti æquidiſtantes, quas eodem modo, quo ſu­
pra dictum eſt, eſſe tanquam vectes oſtende­
mus, quorum fulcimenta kM, & pondus A
ex medio vtriuſq; vectis BC ſuſpenſum, & tres
potentiæ in LHC pondus ſuſtinentes, quas
ſimili modo æquales eſſe demonſtrabimus; fu
nes enim idem efficiunt, ac ſi eſſent potentiæ.

& quoniam pondus æqualiter ex vtroq; ve­
cte HK LM ponderat, quod quidem oſten­
detur quoque, vt in præcedentibus demon­
ſtratum eſt: erit vnaquæq; potentia, tùm in
L, ſeu in G, quod idem eſt; tùm in H, atq;
in C, hoc eſt in F, ſubquintupla ponderis A.

Potentia ergo in G ſuſtinens pondus A ipſius
A ſubquintupla erit.
quod oſtendere opor­
tebat. 154[Figure 154]

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