DelMonte, Guidubaldo
,
Mechanicorvm Liber
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<
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id
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N1043F
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26
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xlink:href
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036/01/065.jpg
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<
s
id
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">Exponantur eadem, ſci
<
lb
/>
licet ſit circulus AEBF;
<
lb
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libra〈qué〉 AB, cuius cen
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lb
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trum C ſit ſupra libram,
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lb
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moueatur in EF. </
s
>
<
s
id
="
id.2.1.47.4.1.1.0.a
">dico
<
lb
/>
pondus in E maiorem ibi
<
lb
/>
habere grauitatem, quàm
<
lb
/>
pondus in F; libramq; EF
<
lb
/>
in AB redire. </
s
>
<
s
id
="
id.2.1.47.4.1.2.0
">Ducantur
<
lb
/>
à punctis EF ipſi AB
<
lb
/>
perpendiculares EL FM,
<
lb
/>
quæ inter ſe æquidiſtan
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lb
/>
tes
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erunt; ſitq; punctum N, vbi AB EF ſe inuicem ſecant. </
s
>
<
s
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<
lb
/>
Quoniam igitur angulus FNM eſt æqualis angulo ENL, & an
<
lb
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gulus
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n
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F MN rectus recto ELN æqualis, ac reliquus NFM reli
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quo
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NEL eſt etiam æqualis; erit triangulum NLE triangu
<
lb
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lo NMF ſimile. </
s
>
<
s
id
="
id.2.1.47.4.1.4.0
">vt igitur NE ad EL, ita NF ad FM; & per
<
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n
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<
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mutando vt EN ad NF, ita EL ad FM. </
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<
s
id
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">ſed cùm ſit HE ipſi
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<
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HF æqualis, erit EN maior NF; quare & EL maior erit FM. </
s
>
<
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id
="
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<
lb
/>
& quoniam dum pondus in E per
<
expan
abbr
="
circumferentiiam
">circumferentiam</
expan
>
EA deſcendit,
<
lb
/>
pondus in F per circumferentiam FB ipſi circumferentiæ EA
<
lb
/>
æqualem aſcendit; deſcenſuſq; ponderis in E de directo (vt ip
<
lb
/>
ſi dicunt) capit EL: aſcenſus verò ponderis in F de directo ca
<
lb
/>
pit FM; minus de directo capiet aſcenſus ponderis in F, quàm
<
lb
/>
deſcenſus ponderis in E. </
s
>
<
s
id
="
id.2.1.47.4.1.4.0.c
">maiorem igitur grauitatem habebit pon
<
lb
/>
dus in E, quàm pondus in F. </
s
>
</
p
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<
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id
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type
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28
<
emph
type
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Primi.
<
emph.end
type
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italics
"/>
</
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>
<
s
id
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id
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15
<
emph
type
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italics
"/>
Primi.
<
emph.end
type
="
italics
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</
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<
s
id
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id.2.1.48.1.1.3.0
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<
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id
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29
<
emph
type
="
italics
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Primi.
<
emph.end
type
="
italics
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</
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s
id
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<
margin.target
id
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4
<
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type
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Sexti.
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type
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</
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<
s
id
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id.2.1.48.1.1.5.0
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16
<
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type
="
italics
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Quinti.
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type
="
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</
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</
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<
p
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<
s
id
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">Producatur CD ex vtraq; parte in OP, quæ lineam EF in
<
lb
/>
puncto S ſecet. </
s
>
<
s
id
="
id.2.1.49.1.1.2.0
">& quoniam (vt aiunt) quò magis pondus à li
<
lb
/>
nea directionis OP diſtat, eò fit grauius; idcirco hoc quoq; me
<
lb
/>
dio pondus in E maiorem habere
<
expan
abbr
="
grauitauitatem
">grauitatem</
expan
>
pondere in F o
<
lb
/>
ſtendetur. </
s
>
<
s
id
="
id.2.1.49.1.1.3.0
">Ducantur à punctis EF ipſi OP perpendiculares EQ
<
lb
/>
FR. </
s
>
<
s
id
="
id.2.1.49.1.1.3.0.a
">ſimili ratione oſtendetur, triangulum QES triangulo RFS
<
lb
/>
ſimile eſſe; lineamq; EQ ipſa RF maiorem eſſe. </
s
>
<
s
id
="
id.2.1.49.1.1.4.0
">pondus itaq;
<
lb
/>
in E magis à linea OP diſtabit, quàm pondus in F; ac propterea
<
lb
/>
pondus in E maiorem habebit grauitatem pondere in F. </
s
>
<
s
id
="
id.2.1.49.1.1.4.0.a
">ex quibus
<
lb
/>
reditus libræ EF in AB manifeſtus apparet. </
s
>
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