Mersenne, Marin; Galilei, Galileo, Qvestions physico-mathematiqves : et Les mechaniqves du sieur Galilee : avec Les Prelvdes de l' harmonie vniuerselle vtiles aux philosophes, aux medecins, aux astrologues, aux ingenieurs, & aux musiciens Les questions theologiques, physiques, morales, et mathematiques, 1635

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          <p>
            <s xml:id="echoid-s4454" xml:space="preserve">
              <pb o="50" file="00329" n="328" rhead="Les Mechaniques"/>
            leurs plans. </s>
            <s xml:id="echoid-s4455" xml:space="preserve">Ce que Pappus Alexãdrin
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            s’eſt efforcé de monſtrer dans le 8. </s>
            <s xml:id="echoid-s4456" xml:space="preserve">liure
              <lb/>
            de ſes Collections Mathematiques,
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            mais il s’eſt trompé, à mon aduis, en ce
              <lb/>
            qu’il a ſupposé vne force donnée pour
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            mouuoir le poids ſur le plan horizõtal,
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            ce qui eſt faux, parce qu’il ne faut nulle
              <lb/>
            force ſenſible, ſi l’on oſte les empeſche-
              <lb/>
            mens exterieurs. </s>
            <s xml:id="echoid-s4457" xml:space="preserve">C’eſt pourquoy il eſt
              <lb/>
            plus à propos de chercher la force qui
              <lb/>
            meut le fardeau ſur le plan vertical ou
              <lb/>
            perpendiculaire A F, laquelle eſt tou-
              <lb/>
            ſiours égale à la peſanteut du fardeau,
              <lb/>
            que de cherchet la force qui le meut
              <lb/>
            ſur le plan horizontal.</s>
            <s xml:id="echoid-s4458" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4459" xml:space="preserve">Soit donc le cercle AIC, dontle dia-
              <lb/>
              <figure xlink:label="fig-00329-01" xlink:href="fig-00329-01a" number="33">
                <image file="00329-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/00329-01"/>
              </figure>
            mettre
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            eſt ABC,
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            & </s>
            <s xml:id="echoid-s4460" xml:space="preserve">le cen-
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            tre B; </s>
            <s xml:id="echoid-s4461" xml:space="preserve">& </s>
            <s xml:id="echoid-s4462" xml:space="preserve">
              <lb/>
            qu’il y ait
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            deux for-
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            ces éga-
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            les aux
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            points A
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            & </s>
            <s xml:id="echoid-s4463" xml:space="preserve">C, qui
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            repreſĕtĕt
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            vne balãce mobile autour du centre </s>
          </p>
        </div>
      </text>
    </echo>
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