DelMonte, Guidubaldo, Mechanicorvm Liber

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1
Sit ABC orbiculus
trochleæ ſuperioris, &
DEF trochleæ inferio­
ris ponderi G alligatæ;
ſitq; funis HABCDE
Fk circa orbiculos re­
uolutus, qui ſit religatus
in K, & in H trochleæ
inferiori; ſitq; potentia
in L ſuſtinens pondus
G.
dico pondus poten
tiæ ſeſquialterum eſſe.

Quoniam enim vterque
funis CD AH tertiam
ſuſtinet partem ponde­
ris G, erit vnaquæq; po
tentia in DH ſubtripla
ponderis G; quibus ſi­
mul aſſumptis eſt æqua­
179[Figure 179]
lis potentia in L: potentia enim in L dupla eſt potentiæ in D, &
eius, quæ eſt in H.
quare potentia in L ſubſeſquialtera eſt ponde­
ris G.
pondus ergo G ad pontentiam in L eſt, vt tria ad duo;
hoc eſt ſeſquialterum.
quod demonſtrare oportebat.
Cor. 5 huius.Ex. 15 huius.

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