DelMonte, Guidubaldo, Mechanicorvm Liber

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25
Sit deinde libra AB,
cuius centrum C ſit infra li
bram; ſintq; in AB pon
dera æqualia; libraq; ſit
mota in EF.
Dico maio­
rem habere grauitatem
pondus in F, quàm pondus
in E.
atq; ideo libram EF
deorſum ex parte F moue­
ri.
Producatur DC ex
vtraq; parte vſq; ad mun­
di centrum S, & vſq; ad
O, lineaq; HS ducatur,
cui à punctis EF æquidi­
ſtantes ducantur GEk FL;
connectanturq; CE CF:
atq; centro C, ſpatioq; CE
circulus deſcribatur AEO
BF.
ſimiliter demonſtra­
bitur puncta ABEF in
circuli circumferentia eſſe;
deſcenſumq; libræ EF vná
cum ponderibus rectum ſe
cundùm lineam HS fieri;
ponderumq; in EF ſecun
47[Figure 47]dùm
lineas GK FL ipſi HS æquidiſtantes.
Quoniam autem an
gulus CFP æqualis eſt angulo CEO: erit angulus HFP angulo
HEO maior.
angulus verò HFL æqualis eſt angulo HEG. à
quibus igitur ſi demantur anguli HFP HEO, erit angulus
LFP angulo GEO minor.
quare deſcenſus ponderis in F rectior
erit aſcenſu ponderis in E.
ergo naturalis potentia ponderis in
F reſiſtentiam violentiæ ponderis in E ſuperabit.
& ideo ma­
iorem habebit grauitatem pondus in F, quàm pondus in E.

Pondus igitur in F deorſum, pondus verò in E ſurſum mo­
uebitur.
29 Primi.
Ariſtotelis quoq; ratio hic perſpicua erit. ſit enim punctum

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