Borelli, Giovanni Alfonso - De motionibus naturalibus a gravitate pendentibus

Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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1
rantes ſibi mutuò impellunt, & proindè vna alterius
vim, & actionem deſtruit, quantum ergo lamina in
flectitur deorsùm à pondere C, tantumdèm ſursùm re
flectitur à contrario impulſu ipſius H. Cap. 3. flui
dum in ſuo
toto quie
ſcens pon
derat.

PROP. XXVII.

Idipſum adhibitis contrarijs ponderibus ope libræ
verificatur.

APplicetur libra DE radio

30[Figure 30]
rum æqualium ſuffultą
in F, it aut terminus D infrà ex
tremitatem laminæ AB collo
cetur, & tunc poſito pondere
G æquale ipſi C in altero extremo libræ E, impel
letur ſursùm terminus libræ, vel vectis D à vi pon
deris G, & ab illo lamina AB in directum retine
bitur contra vim compreſſiuam ponderis C, quando
quidem duo pondera C, & G inter ſe æqualia ſe mu
tuò impellunt, proindeque lamina intercepta AB,
neque deorsùm, neque ſursùm flectetur.

PROP. XXVIII.

Idipſum alia ratione vſurpata libra demonſtratur.

SI nimirùm termino E im

31[Figure 31]
ponatur pondus IG du
plum ipſius C, atque in D ap
plicetur pondus M æqualę
eidem C, manifeſtum eſt, quòd
pondus IG æquale eſt duo-

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