DelMonte, Guidubaldo, Mechanicorvm Liber

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10
Producatur FG vſq; ad mundi cen
trum
, quod ſit S.
& à puncto S circu
lum
AFBG contingens ducatur.
neq;
enim
linea à puncto S circulum con­
tingere
poteſt in A; nam ducta AS
triangulum
ACS duos haberet angu
los
rectos, nempè SAC ACS, quod
eſt
impoſsibile.
neq; ſupra punctum A
in
circumferentia AF continget; cir
culum
enim ſecaret.
tanget igitur in­
fra
, ſitq; SO.
connectantur deinde SD
SL
, quæ circumferentiam AOG in
punctis
KH ſecent.
& Ck CH con
iungantur
.
Et quoniam pondus, quanto
propius
eſt ipſi F, magis quoque inni­
titur
centro; vt pondus in D magis ver­
ſionis
puncto C innititur tanquam
centro
; hoc eſt in D magis ſupra li­
neam
CD grauitat, quàm ſi eſſet in A
ſupra
lineam CA; & adhuc magis in
L
ſupra lineam CL; Nam cùm tres
anguli
cuiuſcunq; trianguli duobus re­
19[Figure 19]
ctis
ſint æquales, & trianguli DCk æquicruris angulus DCk
minor
ſit angulo LCH æquicruris trianguli LCH: erunt reli­
qui
ad baſim ſcilicet CDk CkD ſimul ſumpti reliquis CLH
CHL
maiores.
& horum dimidii; hoc eſt angulus CDS angu
lo
CLS maior erit.
cùm itaq; CLS ſit minor, linea CL ma
gis
adhærebit motui naturali ponderis in L prorſus ſoluti.
hoc
eſt
lineæ LS, quàm CD motui DS.
pondus enim in L li­
berum
, atq; ſolutum in centrum mundi per LS moueretur, pon­
dusq
; in D per DS.
quoniam verò pondus in L totum ſuper LS
grauitat
, in D verò ſuper DS: pondus in L magis ſupra lineam
CL
grauitabit, quàm exiſtens in D ſupra lineam DC.
ergo
linea
CL pondus magis ſuſtentabit, quàm linea CD.
Eodem­
〈qué〉
modo, quò pondus propius fuerit ipſi F, magis ob hanc cau­
ſam
à linea CL ſuſtineri oſtendetur; ſemper enim angulus CLS

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