DelMonte, Guidubaldo
,
Mechanicorvm Liber
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<
chap
id
="
N1043F
">
<
p
id
="
id.2.1.33.4.0.0.0
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type
="
main
">
<
s
id
="
id.2.1.33.4.1.2.0
">
<
pb
n
="
21
"
xlink:href
="
036/01/055.jpg
"/>
tio
<
expan
abbr
="
prætereundũ
">prætereundum</
expan
>
eſſet, quàm
<
expan
abbr
="
verbũ
">verbum</
expan
>
<
expan
abbr
="
vllũ
">vllum</
expan
>
in eius confutatione ſumen
<
lb
/>
dum; cùm ſit prorſus voluntarium. </
s
>
<
s
id
="
id.2.1.33.4.1.3.0
">neceſsitas enim cur pondus
<
lb
/>
in D ex maiore angulo ſit grauius; curq; maior angulus maioris
<
lb
/>
ſit cauſa grauitatis; nuſquam apparet. </
s
>
<
s
id
="
id.2.1.33.4.1.4.0
">ſi autem comparentur in
<
lb
/>
uicem anguli, cùm angulus GCD ſit æqualis angulo FCE; ſi angu
<
lb
/>
lus GCD eſt cauſa grauitatis; quare angulus FCE ſimiliter gra
<
lb
/>
uitatis non eſt cauſa? </
s
>
<
s
id
="
id.2.1.33.4.1.5.0
">Huius autem rei eam in medium rationem
<
lb
/>
afferre videntur, quoniam CG eſt meta, & CF trutina. </
s
>
<
s
id
="
id.2.1.33.4.1.6.0
">ſi (inquiunt)
<
lb
/>
CG eſſet trutina, & CF meta, tunc angulus FCE grauitatis eſſet
<
lb
/>
cauſa; non autem DCG ipſi æqualis. </
s
>
<
s
id
="
id.2.1.33.4.1.7.0
">quæ quidem ratio imma
<
lb
/>
ginaria prorſus, ac voluntaria eſſe videtur. </
s
>
<
s
id
="
id.2.1.33.4.1.8.0
">quid enim refert, ſiue tru
<
lb
/>
tina ſit in CF, ſiue in CG, cùm libra DE in eodem ſemper pun
<
lb
/>
cto C ſuſtineatur? </
s
>
<
s
id
="
id.2.1.33.4.1.9.0
">Vt autem eorum deceptio clarius appa
<
lb
/>
reat. </
s
>
</
p
>
<
p
id
="
id.2.1.34.1.0.0.0
"
type
="
margin
">
<
s
id
="
id.2.1.34.1.1.1.0
">
<
margin.target
id
="
note59
"/>
33
<
emph
type
="
italics
"/>
Prmi.
<
emph.end
type
="
italics
"/>
</
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>
<
s
id
="
id.2.1.34.1.1.2.0
">
<
margin.target
id
="
note60
"/>
29
<
emph
type
="
italics
"/>
Primi.
<
emph.end
type
="
italics
"/>
</
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>
<
s
id
="
id.2.1.34.1.1.3.0
">
<
margin.target
id
="
note61
"/>
29
<
emph
type
="
italics
"/>
Primi.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
id
="
id.2.1.35.1.0.0.0
"
type
="
main
">
<
s
id
="
id.2.1.35.1.1.1.0
">Sit eadem libra AB, cu
<
lb
/>
ius medium C. </
s
>
<
s
id
="
id.2.1.35.1.1.1.0.a
">ſit deinde
<
lb
/>
tota FG trutina. </
s
>
<
s
id
="
id.2.1.35.1.1.2.0
">eaq; im
<
lb
/>
mobilis exiſtat; quæ libram
<
lb
/>
AB in puncto C ſuſtineat. </
s
>
<
s
id
="
id.2.1.35.1.1.3.0
">
<
lb
/>
moueaturq; libra in DE. </
s
>
<
s
id
="
N118EA
">&
<
lb
/>
quoniam trutina eſt, & ſu
<
lb
/>
pra, & infra libram, quis
<
lb
/>
nam angulus erit cauſa gra
<
lb
/>
uitatis, cùm libra DE in
<
lb
/>
<
figure
id
="
id.036.01.055.1.jpg
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place
="
text
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xlink:href
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number
="
39
"/>
<
expan
abbr
="
eodẽ
">
<
lb
/>
eodem</
expan
>
ſemper puncto ſuſtineatur? </
s
>
<
s
id
="
id.2.1.35.1.1.4.0
">dicent forſan, ſi trutina à potentia
<
lb
/>
in F ſuſtiteneatur, tunc CG erit tanquam meta, & angulus
<
lb
/>
DCG grauitatis erit cauſa. </
s
>
<
s
id
="
id.2.1.35.1.1.5.0
">ſi verò ſuſtineatur in G, tunc FCE
<
lb
/>
erit cauſa grauitatis, CF verò tanquam meta erit. </
s
>
<
s
id
="
id.2.1.35.1.1.6.0
">cuius quidem
<
lb
/>
rei nulla videtur eſſe cauſa, niſi immaginaria. </
s
>
<
s
id
="
id.2.1.35.1.1.7.0
">meta enim (quod
<
lb
/>
aiunt) nullam prorſus vim attractiuam, quandoq; ex maioris an
<
lb
/>
guli parte, quandoq; ex parte minoris habere videtur. </
s
>
<
s
id
="
id.2.1.35.1.1.8.0
">Verùm à dua
<
lb
/>
bus potentiis ſuſtineatur trutina, in F ſcilicet, & in G, quod præ ne
<
lb
/>
ceſsitate fieri poteſt, veluti ſi potentia in F ſit adeò debilis, vt ex ſe
<
lb
/>
ipſa medietatem tantùm ponderis ſuſtinere quæat: ſitq; potentia in
<
lb
/>
G ipſi potentiæ in F æqualis, vtræq;
<
expan
abbr
="
autẽ
">autem</
expan
>
ſimul libram vná cum pon
<
lb
/>
deribus ſuſtineant. </
s
>
<
s
id
="
id.2.1.35.1.1.9.0
">tunc quis nam angulus erit cauſa grauitatis? </
s
>
<
s
id
="
id.2.1.35.1.1.10.0
">non </
s
>
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archimedes
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