Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

Table of figures

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              E ſe habeat ad pondus D eadem proportione, qua bra­
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              chium CA ſe habet ad brachium CB. </s>
              <s id="N12A8F">Tunc quippe dici­
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              mus vectem, aut libram manſuram in æquilibrio propter
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                <expan abbr="cõmutatam">commutatam</expan>
              proportionem. </s>
              <s id="N12A99">Etenim quadruplum ponderis
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              D commutatur cum quadruplo longitudinis CB. </s>
              <s id="N12A9F">Et pon­
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              dus E compenſatur à longitudine CA, quæ eſt quarta.
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              </s>
              <s id="N12AA5">pars longitudinis CB: ſicut pondus E eſt quarta pars pon­
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              deris D. </s>
              <s id="N12AAB">Quare promiſcue ſumendo partes ipſas ponde­
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              rantes ſiue ratione propriæ grauitatis, ſiue ratione diſtan­
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              tiæ quam habent à fulcimento, quinque erunt partes ad le­
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              uam, & quinque ad dexteram,
                <expan abbr="vtræq.">vtræque</expan>
              vtriſque in pondere
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              æquales, vel æquè ſimul grauitantes. </s>
              <s id="N12ABA">Siquidem nec pondus
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              D, quod eſt vt quatuor: nec pondus E, quod eſt vt vnum,
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              ſuperare poteſt longitudinem CA, quæ pariter eſt vt vnum.
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              </s>
              <s id="N12AC2">Et ſic vnum ſupra quatuor ex vtraque parte conſtituunt
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              quinquenarium æquale ex commutata proportione longi­
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              tudinis, & grauitatis. </s>
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            <p id="N12AC9" type="main">
              <s id="N12ACB">Cæterum cum Ariſtoteles totam vin ſui argumenti ſum­
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              pſerit ex eo, quod ab æquali pondere celerius mouetur bra­
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              chium, ſeu partem libræ, quæ magis à centro diſtenditur;
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              cauſam ipſam cur exiguæ vires adhibito vecte magna mo­
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              ueant pondera conſtituere videtur in velocitate, quæ bra­
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              chij longitudinem conſequitur, vt ait Baldus. </s>
              <s id="N12AD9">Quod qui­
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              dem ipſe minime approbat. </s>
              <s id="N12ADE">Quæ enim, ait, velocitas in re
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              ſtante? </s>
              <s id="N12AE3">Stant autem vectis, & libra dum manent in æquili­
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              brio, & nihilominus parua potentia ingens ſuſtinet pondus. </s>
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            <p id="N12AE8" type="main">
              <s id="N12AEA">Veruntamen ſi verba Ariſtotelis exactius penſentur non
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              id ſignificant, nec ille talem cauſam formaliter in maiori
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              velocitate, ſed in maiori grauitate, aut virtute conſtituit,
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              quæ brachij maiorem longitudinem conſequitur. </s>
              <s id="N12AF3">Etenim
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              cum dixit:
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              Quoniam autem ab æquali pondere celerius mo­
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              uetur maior earum, quæ à centro ſunt.
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              </s>
              <s id="N12AFF"> Idem per
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              celerius
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              ac
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              per
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              facilius
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              intellexit. </s>
              <s id="N12B10">Quandoquidem paulo poſt id ipſum
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              repetens, ait.
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              Semper autem quanto ab hypomochlio dicta­
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              bit magis, tanto facilius mouebit.
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              </s>
              <s id="N12B20"> Et quidem in motu locali
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              velocitas ſemper facilitatem inuoluit, aut ſupponit,
                <expan abbr="ipſaq.">ipſaque</expan>
              </s>
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