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

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                <pb pagenum="233" xlink:href="010/01/241.jpg"/>
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              ſeu energiæ compreſſionis, quam patitur pars B,
                <expan abbr="quã-do">quan­
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                do</expan>
              ambo poſt flexionem, & motum quieſcunt; ergo
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              momentum
                <expan abbr="potẽtiæ">potentiæ</expan>
              P æqua­
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                <figure id="id.010.01.241.1.jpg" xlink:href="010/01/241/1.jpg" number="93"/>
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              le eſt
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                <expan abbr="reſiſtẽtiæ">reſiſtentiæ</expan>
              , ſeu
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              energiæ, compreſſionis,
                <expan abbr="quã">quam</expan>
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              patitur B, & fiunt niſus per
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              eamdem rectam perpendi­
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              cularem ad horizontem, igi­
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              tur abſoluta potentia P æ­
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              qualis | eſt reſiſtentiæ abſolutæ, ſeu vi compreſſionis,
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              quam patitur B. </s>
              <s id="s.001200">Pari ratione abſoluta potentia E, vel
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              G æquatur reſiſtentiæ, ſeu vi compreſſionis partis op­
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              poſitæ C. vnde deducitur duas potentias P & E, ſeu
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              G ſimul ſumptas æquales eſſe reſiſtentiæ integræ, ſeu
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              vi totali compreſſionis, quam patitur anulus, vel ve­
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              ſica ABC. </s>
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              Cap. 5. de ae
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              ris grauitate
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              æquilibrio,
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              ſtructura, &
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              vi elateria
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              eius.</s>
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            <p type="main">
              <s id="s.001202">Poſtea ſubſtituatur pauimentum durum RS loco
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              potentiæ flectentis E, vel G, & ſolummodo ſupernè
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              anulus, vel veſica aerea comprimatur à potentia P
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              ſcilicet à ſemiſſe potentiarum P, & E. </s>
              <s id="s.001203">Dico anulum̨,
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              vel veſicam aeream æquè conſtringi, ac priùs à dua­
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              bus potentijs contrarijs contundebatur. </s>
              <s id="s.001204">Quia paui­
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              mentum ſtabile RS perinde reagit impediendo mo­
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              tum, & deſcenſum ponderis P, ipſumque in eodem ſi­
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              tu quiete ſtabili permanere cogit, ac operatur manus
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              ſubiecta E, vel pondus G mediante libra FE, ergo
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              ſtabilitatis ſoli momentum æquatur momento, & po­
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              tentiæ abſolutæ ipſius E, ſeu P. quare anulus, ſeu ae­
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              rea veſica BC comprimitur non à ſingulari, & ſubdu-</s>
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