DelMonte, Guidubaldo, Mechanicorvm Liber

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              <s id="id.2.1.81.5.1.1.0">PROPOSITIO III. </s>
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            <p id="id.2.1.81.6.0.0.0" type="main">
              <s id="id.2.1.81.6.1.1.0">Alio quoq; modo vecte vti poſsumus. </s>
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            <p id="id.2.1.81.7.0.0.0" type="main">
              <s id="id.2.1.81.7.1.1.0">Sit Vectis AB,
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              cuius fulcimentum
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              B; ſitq; ex puncto
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              A pondus C appen­
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              ſum; ſitq; potentia
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              in D vtcunq; inter
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              AB ſuſtinens pon­
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              dus C. </s>
              <s id="id.2.1.81.7.1.1.0.a">Dico vt AB
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                <figure id="id.036.01.095.1.jpg" place="text" xlink:href="036/01/095/1.jpg" number="89"/>
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              ad BD, ita eſſe potentiam in D ad pondus C. </s>
              <s id="id.2.1.81.7.1.1.0.b">Appendatur ex
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              puncto D pondus E æquale ipſi C; & vt BD ad BA, ita fiat pon
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              dus E ad aliud F. </s>
              <s id="N12C1D">& cùm pondera CE ſint inter ſe ſe æqualia; erit
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              pondus C ad pondus F, vt BD ad BA. </s>
              <s id="id.2.1.81.7.1.1.0.c">appendatur pondus
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              F quoq; in D. </s>
              <s id="id.2.1.81.7.1.1.0.d">& quoniam pondus E ad ipſum F eſt, vt grauitas
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              ponderis E ad grauitatem ponderis F; & pondus E ad pondus F
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              eſt, vt BD ad BA: vt igitur grauitas ponderis E ad grauitatem
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              ponderis F, ita eſt BD ad BA. </s>
              <s id="N12C32">vt autem BD ad BA, ita eſt gra
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              uitas ponderis E ad grauitatem ponderis C; quare grauitas ponde­
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              ris E ad grauitatem ponderis F eandem habet proportionem,
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              quam habet ad grauitatem ponderis C. </s>
              <s id="N12C33">pondera ergo CF eandem
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              habent grauitatem. </s>
              <s id="id.2.1.81.7.1.2.0">ſit igitur potentia in D ſuſtinens pondus F,
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              erit potentia in D ipſi ponderi F æqualis. </s>
              <s id="id.2.1.81.7.1.3.0">& quoniam pondus F
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              in D æquè graue eſt, vt pondus C in A; habebit potentia in D
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              eandem proportionem ad grauitatem ponderis F, quam habet ad
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              grauitatem ponderis C. </s>
              <s id="id.2.1.81.7.1.3.0.a">ſed potentia in D pondus F ſuſtinet; po­
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              tentia igitur in D pondus quoq; C ſuſtinebit: & pondus C ad po­
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              tentiam in D ita erit, vt pondus C ad pondus F; & C ad F eſt, vt
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              BD ad BA; erit igitur pondus C ad potentiam in D, vt BD ad
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              BA: & conuertendo, vt AB ad BD, ita potentia in D ad pondus
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              C. </s>
              <s id="id.2.1.81.7.1.3.0.b">potentia ergo ad pondus eſt, vt diſtantia à fulcimento ad pon
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              deris ſuſpendium ad diſtantiam à fulcimento ad potentiam. </s>
              <s id="id.2.1.81.7.1.4.0">quod
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              demonſtrare oportebat. </s>
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            <p id="id.2.1.82.1.0.0.0" type="margin">
              <s id="id.2.1.82.1.1.1.0">
                <margin.target id="note134"/>
                <emph type="italics"/>
              In ſexta huius de libra.
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              </s>
              <s id="id.2.1.82.1.1.2.0">
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              6
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              Huius de libra.
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              </s>
              <s id="id.2.1.82.1.1.3.0">
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              9
                <emph type="italics"/>
              Quinti.
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              </s>
              <s id="id.2.1.82.1.1.4.0">
                <margin.target id="note137"/>
              7
                <emph type="italics"/>
              Quinti.
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              </s>
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          </chap>
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