Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1

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        <div xml:id="echoid-div243" type="section" level="1" n="85">
          <pb o="32" file="0066" n="68" rhead="PHYSICES ELEMENTA"/>
          <p>
            <s xml:id="echoid-s1574" xml:space="preserve">Ex hiſce ratio redditur, quare corpora quædam planis
              <lb/>
            inclinatis impoſita, devolvantur, & </s>
            <s xml:id="echoid-s1575" xml:space="preserve">alia ſimpliciter laban-
              <lb/>
            tur.</s>
            <s xml:id="echoid-s1576" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div245" type="section" level="1" n="86">
          <head xml:id="echoid-head132" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          9.</head>
          <p>
            <s xml:id="echoid-s1577" xml:space="preserve">Corpus A labitur, quia centrum gravitatis illius a plano
              <lb/>
              <note position="left" xlink:label="note-0066-01" xlink:href="note-0066-01a" xml:space="preserve">149.</note>
            inclinato ſuſtinetur, id eſt, linea verticalis quæ tranſit per
              <lb/>
              <note position="left" xlink:label="note-0066-02" xlink:href="note-0066-02a" xml:space="preserve">TAB. IV.
                <lb/>
              fig. 4.</note>
            centrum illud c, ſecat planum inclinatum intra corpus. </s>
            <s xml:id="echoid-s1578" xml:space="preserve">Cor-
              <lb/>
            pus vero B devolvitur, quia verticalis linea, quæ tranſit per
              <lb/>
            centrum gravitatis, ſecat planum inclinatum extra corpus.</s>
            <s xml:id="echoid-s1579" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1580" xml:space="preserve">Ex prædictis etiam ſequitur, corpus deſcendere quando
              <lb/>
              <note position="left" xlink:label="note-0066-03" xlink:href="note-0066-03a" xml:space="preserve">150.</note>
            gravitatis centrum deſcendit, id eſt, Terræ centrum ver-
              <lb/>
            ſus movetur.</s>
            <s xml:id="echoid-s1581" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1582" xml:space="preserve">Aliquando in illo caſu corpus adſcendere videtur, & </s>
            <s xml:id="echoid-s1583" xml:space="preserve">ſæpe
              <lb/>
            etiam revera, ſi integram ipſius maſſam conſideremus, aſcen-
              <lb/>
            dit, quando centrum figuræ corporis cum centro gravitatis
              <lb/>
            non coincidit.</s>
            <s xml:id="echoid-s1584" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div248" type="section" level="1" n="87">
          <head xml:id="echoid-head133" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          10.</head>
          <p>
            <s xml:id="echoid-s1585" xml:space="preserve">Rota A, cujus axis formatur ex duobus conis quorum ba-
              <lb/>
              <note position="left" xlink:label="note-0066-04" xlink:href="note-0066-04a" xml:space="preserve">151.</note>
            ſes rotæ applicantur, ſi ponatur inter duo plana, quorum
              <lb/>
              <note position="left" xlink:label="note-0066-05" xlink:href="note-0066-05a" xml:space="preserve">TAB. IV.
                <lb/>
              fig. 5.</note>
            latera DG, FH, continuata formant angulum FCD, baſin
              <lb/>
            apice magis elevatam habentem, ab inferiori parte HG, verſus
              <lb/>
            planorum partem maxime elevatam FD, movebitur.</s>
            <s xml:id="echoid-s1586" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1587" xml:space="preserve">Propter majorem inter plana diſtantiam in FD, rota A,
              <lb/>
            cujus axis ab utraque parte eſt conus, magis deſcendit inter
              <lb/>
            plana, quando illam partem verſus movetur, & </s>
            <s xml:id="echoid-s1588" xml:space="preserve">ſic gravita-
              <lb/>
            te ſua huc fertur, ſi modo deſcenſus inter plana ſuperet ad-
              <lb/>
            ſcenſum ex anguli FCD inclinatione ad horizontem.</s>
            <s xml:id="echoid-s1589" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div250" type="section" level="1" n="88">
          <head xml:id="echoid-head134" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          11.</head>
          <p>
            <s xml:id="echoid-s1590" xml:space="preserve">Cylindrus ligneus A, intus a latere continet cylindrum
              <lb/>
              <note position="left" xlink:label="note-0066-06" xlink:href="note-0066-06a" xml:space="preserve">152.</note>
            plumbeum; </s>
            <s xml:id="echoid-s1591" xml:space="preserve">centrum gravitatis commune illorum eſt in ſe-
              <lb/>
              <note position="left" xlink:label="note-0066-07" xlink:href="note-0066-07a" xml:space="preserve">TAB. IV.
                <lb/>
              fig. 6.</note>
            ctione ad baſin parallela, cylindrum in duas partes æquales
              <lb/>
            dividente, & </s>
            <s xml:id="echoid-s1592" xml:space="preserve">in puncto, reſpondenti, puncto baſis c.</s>
            <s xml:id="echoid-s1593" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1594" xml:space="preserve">Cylindrus hic utcunque poſitus, movebitur, donec cen-
              <lb/>
            trum gravitatis memoratum ſit in infimo ad quem perveni-
              <lb/>
            re poteſt loco.</s>
            <s xml:id="echoid-s1595" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1596" xml:space="preserve">Si plano inclinato imponatur, in eo ſitu in quo hic </s>
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