Marci of Kronland, Johannes Marcus, De proportione motus figurarum recti linearum et circuli quadratura ex motu, 1648

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            <pb xlink:href="063/01/037.jpg"/>
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              <s>
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              THEOREMA III.
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              </s>
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              <s>
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              Centrum grauitatis producit impulſum in omnibus partibus mobilis
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              illarum magnitudini proportionalem.
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                <emph.end type="center"/>
              </s>
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              <s>Quia grauitas movens partium in toto eſt minor, quàm ſi
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              per ſe, & extra illud totum moveatur, per I. THEOREMA;
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              erit
                <expan abbr="quoq;">quoque</expan>
              illarum motus minùs velox. </s>
              <s>Mouentur autem æqua­
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              li cum centro velocitate: habent igitur à centro illum motum. </s>
              <lb/>
              <s>At verò centrum grauitatis à partibus mobilis, ex ſe verò nul­
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              lam habet grauitatem;
                <expan abbr="eſtq;">eſtque</expan>
              totus impulſus æqualis grauitati
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              ex omnibus partibus collectæ per THEOREMA II Igitur ut
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              tota magnitudo ſeu grauitas ad totum impulſum, ita pars mo­
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              bilis ad partem impulſus proportionalem. </s>
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              <s>
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              COROLLARIVM
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                <emph.end type="center"/>
              </s>
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              <s>Quodlibet punctum mobilis non ſuâ, ſed vi centri gravita­
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              tis mouetur. </s>
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            <p type="main">
              <s>
                <emph type="center"/>
              THEOREMA IV.
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              </s>
            </p>
            <p type="main">
              <s>
                <emph type="center"/>
                <emph type="italics"/>
              Percußuo fit à grauitate ſeu impulſu centri, non verò à grauitate
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              ſeu impulſu partium mobilis.
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                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s>Moueantur duo globi A & B interſe connexi:
                <expan abbr="percutiatq;">percutiatque</expan>
              B
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              in motu globum C ſibi æqualem. </s>
              <s>Dico impulſum in C eſſe ma­
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              iorem, quàm ut æqualis ſit impulſui ex B: ac proinde illam pla­
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              gam ad centrum referri. </s>
              <s>Nam globus B, cùm per ſe movetur,
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              percuſſo æquali C, & expulſo vltimo D, à motu quieſcit per
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              AXIOMA 6. </s>
              <s>At verò B connexus A
                <expan abbr="utrumq;">utrumque</expan>
              expellit D & C,
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                <expan abbr="neq;">neque</expan>
              eo percuſſo quieſcit; Igitur globus C impulſum habet </s>
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          </chap>
        </body>
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