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

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          <chap id="N111A4">
            <pb xlink:href="041/01/069.jpg" pagenum="68"/>
            <p id="N114B9" type="head">
              <s id="N114BB">
                <emph type="italics"/>
              MOMENTI ACQVISTATI.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N114C1" type="main">
              <s id="N114C3">Poniamo degli momenti, altri eſſer intrinſechi: al
                <lb/>
              tri acquiſtati, & altri miſti: & intrinſechi quelli, che
                <lb/>
              non da mouimento precedente dipendono: come ſono
                <lb/>
              gli mouimenti delle grauezze in giù, e del corpo leggiero
                <lb/>
              dentro l'humor più graue in sù. </s>
              <s id="N114CD">Acquiſtati quelli, che ſe­
                <lb/>
              guono l'impreſsion fatta da precedente mouimento: come
                <lb/>
              il mouimento della coſa lanciata, che ſegue il
                <expan abbr="mouimẽto">mouimento</expan>
                <lb/>
              del braccio, o della corda. </s>
              <s id="N114D8">Miſti, come il mouimento delle
                <lb/>
              grauezze dopo l'hauer dato principio a mouerſi: per il che
                <lb/>
              veggiamo li peſi di vicino laſciati, mouerſi con minor mo­
                <lb/>
              mento, che laſciati di lontano: e molte coſe portate dalla
                <lb/>
              propria grauezza nell'aria penetrar ſotto l'accqua, con­
                <lb/>
              tro di quel che porta l'intrinſeco momento: onde dopo
                <lb/>
              l'eſſere affondate da ſe ſteſsi ritornar á galla. </s>
              <s id="N114E6">Et il momen­
                <lb/>
              to intrinſeco eſſer l'iſteſſo ſempre. </s>
              <s id="N114EA">l'acquiſtato, mancando
                <lb/>
              la cauſa di ponerſi, e con il tempo, e dall'impedimento che
                <lb/>
              le faccia reſiſtenza.
                <emph type="italics"/>
              CVGNO.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N114F5" type="main">
              <s id="N114F7">Il cugno percoſſo, conſiderato in vn modo, rappreſenta
                <lb/>
              un piano inchinato, che ſi ſpinga ſotto il peſo. </s>
              <s id="N114FB">Et altrimen
                <lb/>
              te rappreſenta due leue, che nelle loro ſtremità, facciano
                <lb/>
              l'vna all'altra ſottoleua, & habbiano il peſo tra la poſſanza,
                <lb/>
              e'l ſottoleua. </s>
              <s id="N11503">Et altrimente rappreſenta leua nel cui ſtremo
                <lb/>
              ſia il peſo, & il ſottoleua tramezzo.
                <emph type="italics"/>
              VITE E CHIOCCIA.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N1150C" type="main">
              <s id="N1150E">La vite, o chioccia rappreſenta vno o più piani auuolti
                <lb/>
              ad vn fuſello. </s>
              <s id="N11512">Sono e maſchia, e femina: de quali vna ſtan­
                <lb/>
              do ferma, l'altra che gira ſoſtiene il peſo. </s>
              <s id="N11516">acquiſta dunque for
                <lb/>
              za,
                <expan abbr="ſecõdo">ſecondo</expan>
              la detta inchinazione, e ſecondo la lunghezza del
                <lb/>
              raggio che ſe le accompagna. </s>
              <s id="N11520">Vite perpetua diciamo vn
                <lb/>
              sympano con denti a vite, che girando tocchi rota dentata. </s>
              <lb/>
              <s id="N11525">Per il che accreſce la forza, e per la proprieta della vite,
                <lb/>
              e della congiogatione delle rote. </s>
            </p>
            <p id="N11529" type="head">
              <s id="N1152B">
                <emph type="italics"/>
              IL FINE.
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
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