DelMonte, Guidubaldo, Le mechaniche

Page concordance

< >
Scan Original
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
< >
page |< < of 270 > >|
    <archimedes>
      <text id="id.0.0.0.0.3">
        <body id="id.2.0.0.0.0">
          <chap id="N13354">
            <pb xlink:href="037/01/088.jpg"/>
            <p id="id.2.1.346.0.0" type="head">
              <s id="id.2.1.346.1.0">Altramente. </s>
            </p>
            <p id="id.2.1.347.0.0" type="main">
              <s id="id.2.1.347.1.0">
                <emph type="italics"/>
              Sia la leua AB, il cui ſoſtegno ſia B, & il peſo E ſia pendente dal punto C, &
                <lb/>
              ſia in A la forza, che ſostiene l peſo E. </s>
              <s id="id.2.1.347.2.0">Dico, che ſi come BC à BA, coſi è
                <emph.end type="italics"/>
                <lb/>
                <figure id="id.037.01.088.1.jpg" xlink:href="037/01/088/1.jpg" number="82"/>
                <lb/>
                <emph type="italics"/>
              anco la poſſanza di A verſo il peſo E. </s>
              <s id="id.2.1.347.3.0">Allunghiſi AB in D, & facciaſi
                <lb/>
              BD eguale à BC; & appicchiſi il peſo F al punto D, che ſia eguale al peſo E;
                <lb/>
              & parimente dal punto A ſi faccia pendere il punto G in modo, che il peſo F hab
                <lb/>
              bia la proportione iſteſſa verſo il peſo G, che ha AB à BD. </s>
              <s id="id.2.1.347.4.0">i peſi FG verranno
                <lb/>
              à peſar egualmente: & concioſia che CB ſia eguale à BD, anco i peſi FE egua
                <lb/>
              li peſeranno egualmente. </s>
              <s id="id.2.1.347.5.0">Ma i peſi FEG nella bilancia, ouero nella leua DBA
                <lb/>
              appiccati, il cui ſoſtegno è B, non peſeranno egualmente, ma inchineranno à baſſo
                <lb/>
              dalla parte di A. </s>
              <s id="id.2.1.347.6.0">Per laqual coſa pongaſi in A tanta forza, che i peſi FEG peſi­
                <lb/>
              no egualmente, ſarà la poſſanza in A eguale al peſo G; peroche i peſi FE peſa­
                <lb/>
              no egualmente, & la forza in A niente altro deue fare, che ſoſtenere il peſo G, ac­
                <lb/>
              cioche non deſcenda. </s>
              <s id="id.2.1.347.7.0">Et percio che i peſi FEG, & la poſſanza in A peſano egual
                <lb/>
              mente, leuati dunque via i peſi FG, i quali peſano egualmente, i reſtanti peſeran­
                <lb/>
              no pur egualmente, cioè la poſſanza in A co'l peſo E, cioè la poſſanza in A ſo­
                <lb/>
              sterra il peſo E, ſi che la leua AB rimanga, come era prima. </s>
              <s id="id.2.1.347.8.0">Et per eſſere la
                <lb/>
              poſſanza in A eguale al peſo G, & il peſo E eguale al peſo F, haurà la poſſanza
                <lb/>
              in A la proportione isteſſa al peſo E, che hà BD, cioè BC à BA, che biſogna
                <lb/>
              ua moſtrare.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="id.2.1.349.0.0" type="head">
              <s id="id.2.1.349.1.0">COROLLARIO I. </s>
            </p>
            <p id="id.2.1.350.0.0" type="main">
              <s id="id.2.1.350.1.0">Da queſto etiandio, come prima, puote eſſere manifeſto, che ſe il peſo
                <lb/>
              E ſarà poſto piu vicino al ſoſtegno B, come in H, minore
                <lb/>
              poſſanza poſta in A puote ſoſtener il detto peſo. </s>
            </p>
            <p id="id.2.1.351.0.0" type="main">
              <s id="id.2.1.351.1.0">
                <emph type="italics"/>
              Percioche minor proportione ha HB à BA, che CB à BA. </s>
              <s id="N1365A">& quanto piu da
                <emph.end type="italics"/>
                <lb/>
                <arrow.to.target n="note110"/>
                <emph type="italics"/>
              vicino il peſo ſarà al ſoſtegno, ſempre anco ſi moſtrerà ſimilmente minor poſſanza
                <lb/>
              poter ſoſtener il peſo E.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="id.2.1.352.0.0" type="margin">
              <s id="id.2.1.352.1.0">
                <margin.target id="note110"/>
                <emph type="italics"/>
              Per la
                <emph.end type="italics"/>
              8.
                <emph type="italics"/>
              del quinto.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="id.2.1.353.0.0" type="head">
              <s id="id.2.1.353.1.0">COROLLARIO II. </s>
            </p>
            <p id="id.2.1.354.0.0" type="main">
              <s id="id.2.1.354.1.0">Segue etiandio, che la poſſanza in A ſempre è minore del peſo E: </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>