Galilei, Galileo, Les méchaniques, 1634

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<text>
<body>
<chap>
<p type="main">
<s id="s.000237">
d'autant plus de force pour le mouuoir
<lb/>
ſur vn plan incliné, qu'il a plus d'incli­
<lb/>
nation au mouuement contraire. </s>
</p>
<p type="main">
<s id="s.000238">Ce qui ſera plus intelligible par
<lb/>
<lb/>
cette figure, dans
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laquelle AB ſoit le
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plan parallele à l'o­
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rizon, ſur lequel la
<lb/>
boule eſt indif­
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ferente au mouue­
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ment, & au repos, de ſorte que le vent
<lb/>
ou la moindre force la peut faire mou­
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uoir; mais il faut vne plus grande force
<lb/>
pour la faire mouuoir du point A au
<lb/>
point C ſur le plan incliné AC, & en­
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core vne plus grande pour la mouuoir
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ſur les plans AD, & AE: & finalement
<lb/>
l'on ne peut la leuer ſur le plan perpen­
<lb/>
diculaire AF, que par vne force égale à
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tout le poids G. </s>
</p>
<p type="main">
<s id="s.000239">Or l'on ſçaura
<expan abbr="cõbien">combien</expan>
il faut moins de
<lb/>
force pour leuer le fardeau ſur les plans
<lb/>
<expan abbr="l'õ">l'on</expan>
tire les lignes perpen­
<lb/>
diculaires à l'orizon CH, DI & KE, cat
<lb/>
il y aura meſme proportion des forces
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neceſſaires pour éleuer le fardeau ſur
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chaſque plan audit fardeau, que des
<lb/>
lignes perpendiculaires aux lignes de </s>
</p>
</chap>
</body>
</text>
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