Galilei, Galileo, Les méchaniques, 1634

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      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000320">
                <pb pagenum="73" xlink:href="047/01/093.jpg"/>
              auſſi ayſé de la determiner que les au­
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              tres forces. </s>
            </p>
            <p type="head">
              <s id="s.000321">
                <emph type="center"/>
              ADDITION VII.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000322">Galilée promettoit pluſieurs probleſ­
                <lb/>
              mes à la fin de ſes mechaniques, mais
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              puiſque nous ne les
                <expan abbr="auõs">auons</expan>
              point veus, il
                <lb/>
              faut ſeulement icy aioûter quelques
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              conſiderations
                <expan abbr="touchãt">touchant</expan>
              les
                <expan abbr="mouuemẽs">mouuemens</expan>
              ;
                <lb/>
              en attendant que nous en donnions
                <lb/>
              pluſieurs
                <expan abbr="obſeruatiõs">obſeruations</expan>
              tres-exactes. </s>
              <s id="s.000323">Soit
                <lb/>
              donc le plan BG incliné de 30. degrez
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              ſur le plan horizontal BF: il eſt premie­
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              rement certain que le poids peſe d'au­
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              tant moins ſur BG que dans la ligne
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              perpendiculaire GX, que BG eſt plus
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              grand que GX, c'eſt à dire deux fois
                <lb/>
                <figure id="id.047.01.093.1.jpg" xlink:href="047/01/093/1.jpg" number="29"/>
                <lb/>
              moins,
                <expan abbr="dautãt">dautant</expan>
              que GX,
                <lb/>
              eſt ſouz double de BG,
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              par la conſtruction. </s>
            </p>
            <p type="main">
              <s id="s.000324">Secondement il eſt cer­
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              tain que la boule miſe au
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              point G & roulante ſur
                <lb/>
              GB deſcend plus lente­
                <lb/>
              ment que par la ligne G
                <lb/>
              X. </s>
              <s id="s.000325">Mais il eſt difficile de
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              ſçauoir combien elle deſcend plus viſte </s>
            </p>
          </chap>
        </body>
      </text>
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