DelMonte, Guidubaldo, Mechanicorvm Liber

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page |< < of 288 > >|
166[Figure 66]
lis CA, erit CH ad CB, vt F ad D; & maior quidem eſt CB,
quàm CH; idcirco D pondere F maius erit.
Diuidatur ergo D
in duas partes Gk, ſitq; G ipſi F æqualis; erit vt BC ad CH,
vt Gk ad G; & diuidendo, vt BH ad HC, ita K ad G; & conuer
tendo, vt CH ad HB, ita G ad k.
Vt autem CH ad HB, ita eſt
F ad E.
vt igitur G ad k, ita eſt F ad E; & permutando vt G
ad F, ita k ad E.
ſunt autem GF æqualia; erunt & kE inter ſe
ſe æqualia.
cùm itaq; pars G ſit ipſi F æqualis, & K ipſi E; erit
totum C k ipſis EF ponderibus æquale.
& quoniam AC eſt ip­
ſi CH æqualis; ſi igitur pondera EF ex puncto H ſuſpendantur,
pondus D ipſis EF in H appenſis æqueponderabit.
ſed & ipſis
æqueponderat in CB, hoc eſt F in B, & E in C; cùm ſit vt AC
ad CB, ita F ad. D.
pondus enim E ex centro libræ C ſuſpen­
ſum non efficit, vt libra in alterutram moueatur partem.
tàm igi­
tur grauia erunt pondera EF in CB, quàm in H appenſa.

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