Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

Table of figures

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              taculo D ſuſtineri intelligetur, ſed ſimul ab vtroque, ita
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              vt dimidium, alterutri reſpondeat virtuti. </s>
              <s id="N15395">Quo fit vt cum
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              potentia ad pondus attollendum, ipſa inferiori trochlea vti­
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              tur tanquam vecte non paruam virtutem ab ipſa trochlea
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              mutuetur,
                <expan abbr="nõ">non</expan>
              ſecus ac à vecte, cuius alterum extremum fir­
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              miter alicubi ſit innixum, ad eleuandum pondus, quod ex
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              eius medio pendeat, vt conſtare poteſt in deſcripto vecte
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                <figure id="id.005.01.184.1.jpg" xlink:href="005/01/184/1.jpg" number="64"/>
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              ABC, cuius extre­
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              mum C fulciatur in
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              D, extremum verò
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              A ſit à
                <expan abbr="potẽtia">potentia</expan>
              ele­
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              uandum, & ex pun­
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              cto medio B
                <expan abbr="propẽ-deat">propen­
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                deat</expan>
              onus
                <expan abbr="alligatũ">alligatum</expan>
              ,
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              quod ſit ipſum E.
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              <s id="N153CA">Nam & ſi pondus
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              potentiæ vires excederet,
                <expan abbr="duplamq.">duplamque</expan>
              ferè proportionem ha­
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              beret reſpectu earum, omnino tamen beneficio vectis tolle­
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              retur, cum dimidium tantùm illius ipſi potentiæ reſponde­
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              ret. </s>
              <s id="N153D9">Quod ſi plures orbiculi in ipſa inferiori trochlea con­
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              tineantur, idem fiet, ac ſi totidem vectibus eiuſdem rationis
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              idem pondus ab eadem potentia moueatur. </s>
              <s id="N153E0">Nam cum ſin­
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              gulis pariter onus leuandum impartiri debeat, quò plures
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              fuerint rotulæ ſicut vectes, eò minus potentiæ ad leuandum
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              propria virtute relinquitur, ac propterea minor, ac minor
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              virtus in trahente requiritur iuxta numerum rotularum. </s>
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              <s id="N153ED">Cæterum in qua ſigillatim proportione ad multiplicatio­
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              nem ipſarum rotularum in inferioribus trochleis, augeatur
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              virtus mouentis, vel pondus imminuatur, ſumendum eſt ex
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              codem Guido Vbaldo, & alijs, qui hac de re ex profeſſo, ac
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              fuſiùs tractant; cum ad explicationem, & confirmationem
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              doctrinæ Ariſtotelis, ſufficiat oſtendiſſe, qua ratione, & via
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              id poſſit contingere. </s>
              <s id="N153FC">Et ſi quis multiplicatis trochleis, ſu­
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              culis, ac vectibus, vt hic idem Philoſophus ait, magna vide­
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              rit pondera eb exigua virtute moueri, aut eleuari, deſinat
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              admirari. </s>
              <s id="N15405">Nam & ore tantum perflando vidi pondus tre-</s>
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