Galilei, Galileo, Les méchaniques, 1634

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<text>
<body>
<chap>
<s id="s.000109">
<emph type="center"/>
III. SVPPOSITION.
<emph.end type="center"/>
</s>
</p>
<p type="main">
<s id="s.000110">Le centre de la peſanteur de deux
<lb/>
corps également peſans eſt au milieu
<lb/>
de la ligne droite qui conioint les cen­
<lb/>
tres de peſanteur deſdits corps; c'eſt à
<lb/>
dire que deux corps également peſans,
<lb/>
& également éloignez de l'appuy de la
<lb/>
balance ont le point de leur équilibre
<lb/>
au milieu de la commune conjonction
<lb/>
de leurs éloignemens égaux: par exem­
<lb/>
ple, la diſtance CA, eſtant égale à la
<lb/>
diſtance CB, & les deux poids égaux
<lb/>
G & H, eſtant ſuſpendus aux points A
<lb/>
& B, il n'y a nulle raiſon pour laquelle
<lb/>
ils doiuent pluſtoſt s'incliner d'vn coſté
<lb/>
que de l'autre. </s>
</p>
<p type="main">
<s id="s.000111">Mais il faut remarquer que la diſtan­
<lb/>
ce des poids, ou des corps peſans d'auec
<lb/>
<lb/>
l'appuy
<lb/>
ſe doit
<lb/>
meſurer
<lb/>
par les li­
<lb/>
gnes
<expan abbr="perpẽdiculaires">perpendiculaires</expan>
, qui tombent des
<lb/>
points de la
<expan abbr="ſuſpenſiõ">ſuſpenſion</expan>
, ou des centres de
<lb/>
la peſanteur de chaque corps iuſques
<lb/>
au centre de la terre. </s>
<s id="s.000112">De là vient que </s>
</p>
</chap>
</body>
</text>
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