DelMonte, Guidubaldo, Mechanicorvm Liber

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    <archimedes>
      <text>
        <body>
          <chap id="N13F6F">
            <pb n="98" xlink:href="036/01/209.jpg"/>
            <p id="id.2.1.197.4.0.0.0" type="main">
              <s id="id.2.1.197.4.1.1.0">Motus vectium fit hoc modo, vectis YZ, cùm funis ſit religatus
                <lb/>
              in E, habet fulcimentum in Y, pondus in B medio appenſum, &
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              potentia in Z. </s>
              <s id="N15C48">& vectis PQ habet fulcimentum in P potentia in
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              medio, & pondus in q. </s>
              <s id="N15C4C">oportet enim orbiculos, quorum cen­
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              tra ſunt BD in eandem partem moueri, videlicet vt QZ ſur­
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              ſum moueantur. </s>
              <s id="id.2.1.197.4.1.2.0">& quoniam funis religatus eſt in L, erit T fulci
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              mentum vectis ST, qui pondus habet in medio, & potentia in
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              S. </s>
              <s id="N15C59">& quia S mouetur ſurſum, neceſſe eſt etiam R ſurſum moue
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              ri; & ideo F erit fulcimentum vectis FR, & pondus erit in R,
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              & potentia in medio. </s>
              <s id="id.2.1.197.4.1.3.0">orbiculi igitur, quorum centra ſunt H k,
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              in contrariam mouentur partem eorum, quorum centra ſunt BD:
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              quare partes
                <expan abbr="orbiculorũ">orbiculorum</expan>
              PF in orbiculis deorſum
                <expan abbr="tendẽt">tendent</expan>
              ; videlicet
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              verſus XV. </s>
              <s id="id.2.1.197.4.1.3.0.a">vectis igitur VX in neutram partem mouebitur, cùm
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              P, & F deorſum moueantur; & VX erit tanquam vectis, in cuius
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              medio erit pondus appenſum, & in VX duæ potentiæ æquales
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              ſextæ parti ponderis C. </s>
              <s id="N15C79">potentiæ enim in MO hoc eſt funes PV
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              FX ſextam ſuſtinent partem ponderis C. </s>
              <s id="N15C7D">totus igitur orbiculus,
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              cuius centrum A ſurſum vnà cum trochlea mouebitur; non au­
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              tem circumuertetur. </s>
            </p>
            <p id="id.2.1.197.5.0.0.0" type="head">
              <s id="id.2.1.197.5.1.1.0">PROPOSITIO XXV. </s>
            </p>
            <p id="id.2.1.197.6.0.0.0" type="main">
              <s id="id.2.1.197.6.1.1.0">Si tribus duarum trochlearum orbiculis,
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              quarum altera binis inſignita rotulis à potentia
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              ſupernè detineatur; altera verò vnius tantùm
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              rotulæ infernè
                <expan abbr="cõſtituta">conſtituta</expan>
              , ac ponderi alligata fue
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              rit, circumuoluatur funis; vtroq; eius extremo
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              alicuibi, non autem inferiori trochleæ religa­
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              to: dupla erit ponderis potentia. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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