Stelliola, Niccol� Antonio, De gli elementi mechanici, 1597

Page concordance

< >
Scan Original
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
< >
page |< < of 69 > >|
    <archimedes>
      <text>
        <body>
          <chap id="N10854">
            <pb xlink:href="041/01/029.jpg" pagenum="28"/>
          </chap>
          <chap id="N108B3">
            <p id="N108B4" type="head">
              <s id="N108B6">
                <emph type="italics"/>
              PROPOSITIONE.
                <emph.end type="italics"/>
                <lb/>
              VII. </s>
            </p>
            <p id="N108BE" type="main">
              <s id="N108C0">Se'l centro del peſo attaccato ad eſſa leua ſia ſopra
                <lb/>
              della leua, inalzata la leua, la poſſanza ſoſtentarà minor
                <lb/>
              peſo. </s>
            </p>
            <figure id="id.041.01.029.1.jpg" xlink:href="041/01/029/1.jpg" number="26"/>
            <p id="N108C9" type="head">
              <s id="N108CB">
                <emph type="italics"/>
              Dimoſtratione.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N108D1" type="main">
              <s id="N108D3">
                <emph type="italics"/>
              Sia la leua A B, a cui ſia attaccata vna grauezza, il cui centro ſia
                <lb/>
              C: & intendaſi detta leua in ſito dall'orizonte eleuato: dico che la po­
                <lb/>
              tenza B, ſoſtenta del peſo della grauezza minor portione, che nel ſito
                <lb/>
              orizontale. </s>
              <s id="N108DD">ſi moſtra: tirinſi dal ponto C linee, l'vna perpendicolare
                <lb/>
              alla leua che ſia C D, & l'altra perpendicolare all'orizonte, che
                <lb/>
              ſia C E, che ſeghi la leua nel ponto E: è manifeſto che'l detto ponto
                <lb/>
              ſarà più diſcoſto dalla poſſanza, e più vicino al ponto del ſottoleua. </s>
              <s id="N108E5">ſe
                <lb/>
              dunque per lo ponto C, ſi tiri la linea G C F, parallela all'orizonte, &
                <lb/>
              per li ponti B & A, le linee B F, A G, perpendicolari
                <expan abbr="all'orizõte">all'orizonte</expan>
              è mani
                <lb/>
              feſto, che l'iſteſſo effetto fa la poſſanza in F che ſe fuſſe in B, e lo ſoſtegno
                <lb/>
              in A l'iſteſſo che ſe fuſſe in C: percioche ciaſcun momento opera ſecon
                <lb/>
              da la ſua perpendicolare: perche dunque poſta la poſſanza in F, e lo ſo­
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum