DelMonte, Guidubaldo, Mechanicorvm Liber

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1capiat XM: cùm ipſi
quoq
; hoc modo acci­
piant
, atq; ita accipe­
re
ſit neceſſe.
ſi enim li­
bram
DE in AB redire
demonſtrare
volunt, com
parando
deſcenſus pon­
deris
in D cum deſcen­
ſu
ponderis in E, neceſſe
eſt
, vt oſtendant rectum
deſcenſum
OC corre­
ſpondentem
circumferen
tiæ
DA maiorem eſſe re
cto
deſcenſu TH circum
31[Figure 31]
ferentiæ
EV correſpondente.
ſi enim partem tantùm totius de­
ſcenſus
ex D in A acciperent, vt D k; oſtenderentq; magis cape­
re
de directo deſcenſum Dk, quàm æqualis portio deſcenſus ex
puncto
E.
ſequetur pondus in D ſecundùm ipſos grauius eſſe pon
dere
in E; & vſq; ad k tantùm deorſum moueri: ita vt libra mo
ta
ſit in kI.
ſimiliter ſi libram KI in AB redire demonſtrare vo
lunt
accipiendo portionem deſcenſus ex k in A; hoc eſt k S;
oſtenderentq
; k S magis de directo capere, quàm ex aduerſo æ­
qualis
deſcenſus ex puncto I: ſimili modo ſequetur pondus in k
grauius
eſſe, quàm in I; & vſq; ad S tantùm moueri.
& ſi rurſus
oſtenderent
portionem deſcenſus ex S in A, atq; ita deinceps, re
ctiorem
eſſe æquali deſcenſu ponderis oppoſiti; ſemper ſequetur
libram
SI ad AB propius accedere, nunquam tamen in AB per­
uenire
demonſtrabunt.
ſi igitur libram DE in AB redire demon
ſtrare
volunt, neceſſe eſt, vt deſcenſum ponderis ex D in A de di
recro
capere quantitatem lineæ ex puncto D ipſi AB ad rectos
angulos
ductæ accipiant.
atq; ita, ſi æquales deſcenſus DA AN
inuicem
comparemus, qui æqualiter de directo capient OC CT,
eueniet
idem pondus in D æquè graue eſſe, vt in A.
ſi verò por
tiones
tantum ex D A accipiamus; grauius erit in A, quàm
in
D.
ergo ex diuerſitate tantùm modi conſiderandi, idem pon
dus
, & grauius, & leuius eſſe continget.
non autem ex ipſa na­

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