Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000059">
                <pb pagenum="7" xlink:href="010/01/015.jpg"/>
                <arrow.to.target n="marg7"/>
                <lb/>
              culares quales ſunt illæ quæ à fune-pendulis deſcri­
                <lb/>
              buntur, & in prædicto motu vertiginoſo eſt tam ne­
                <lb/>
              ceſſarius, & naturalis aſcenſus partis minus grauis B
                <lb/>
              per arcum BF quemadmodum neceſſarius eſt lapſus
                <lb/>
              & deſcenſus totius grauis per arcum DE vſque ad lo­
                <lb/>
              cum infimum E & licet aſcenſus prædictæ portionis
                <lb/>
              B vulgo cenſeatur motus violentus, nihilominus ſi
                <lb/>
              perpendatur vertigo, & debita ſituatio corporis gra­
                <lb/>
              uis quatenus naturalis eſt & naturali inſtinctu acqui­
                <lb/>
              ſita, & producta; cùm ſit impoſſibile vt prædicta ſitua­
                <lb/>
              tio debita abſolute conſequatur abſque aſcenſu por­
                <lb/>
              tionis B ſitque verum quoque quod, qui vult finem̨
                <lb/>
              velit quoque neceſſe eſt media, quæ ad finem conſe­
                <lb/>
              quendum neceſſaria
                <expan abbr="sũt">sunt</expan>
              ; hinc rationabiliter inferetur
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              à vi naturali verè impelli minus graue ſurſum verſus
                <lb/>
              F, ac proindè concedendum erit aſcenſum per BF
                <lb/>
              naturalem prorſus eſſe vel potius in eadem naturali
                <lb/>
              operatione includi debere violentiam motus præ­
                <lb/>
              dicti aſcenſus; ſed vtcunque ſit ſufficit nobis vt præ­
                <lb/>
              dicta operatio ſit neceſſaria, ſit que prorſus impoſſibi­
                <lb/>
              le vt aliter contingat; cæteri verò eam vocent ſiue na­
                <lb/>
              turalem, ſiue violentam ad eorum libitum. </s>
            </p>
            <p type="margin">
              <s id="s.000060">
                <margin.target id="marg7"/>
              Cap. 2. dę
                <lb/>
              momentis
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              grauium in
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              fluido inna­
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              tantium</s>
            </p>
            <p type="main">
              <s id="s.000061">
                <emph type="center"/>
              PROP. II.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000062">
                <emph type="center"/>
                <emph type="italics"/>
              Idipſum verificatur in fluidis contentis in
                <lb/>
              eodem ſiphone circulari.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000063">PRæterea vt duo corpora in extremitatibus libræ
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              conſtituantur non ſemper eſt neceſſe vt corpora </s>
            </p>
          </chap>
        </body>
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