DelMonte, Guidubaldo, Mechanicorvm Liber

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1
Quod etiam ſi vtraq; trochlea duos
habuerit orbiculos, quorum centra
ſint ABCD, funiſq; per omnes cir
cumuoluatur, qui in LM religetur;
ſimiliter oſtendetur potentiam in N
æqualem eſſe ponderi H.
vnaquæq;
enim potentia in EF ſuſtinens pon­
dus ſubquadrupla eſt ponderis; & po
tentiæ in CD duplæ ſunt earum,
quæ ſunt in EF; erit vnaquæq; po­
tentia in CD ſubdupla ponderis H.
quare potentiæ in CD ſimul ſumptæ
ponderi H erunt æquales.
& quo­
niam potentia in N duabus in CD
pontentiis eſt æqualis; erit potentia
in N ponderi H, æqualis.
Et ſi in N ſit potentia mouens, ſi
mili modo oſtendetur, ſpatium po­
tentiæ æquale eſſe ſpatio ponderis.
Si autem vtraq; trochlea tres, vel
quatuor, vel quotcunq; habeat orbi­
culos; ſemper oſtendetur potentiam in
N æqualem eſſe ponderi H; & ſpa
tium potentiæ pondus mouentis æ­
quale eſſe ſpatio ponderis moti. 188[Figure 188]
Vectium autem motus hoc pacto ſe habent; orbiculorum qui
dem trochleæ ſuperioris, veluti AC in præcedenti figura fulcimen
tum eſt C, pondus verò in A appenſum, & potentia in D medio.

vectes autem orbiculorum trochleæ inferioris ita mouentur, vt ip
ſius GE fulcimentum ſit E, pondus in medio appenſum, & po
tentia in G.

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