Fabri, Honoré, Tractatus physicus de motu locali, 1646

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          <chap id="N270EE">
            <pb pagenum="383" xlink:href="026/01/417.jpg"/>
            <p id="N2767F" type="main">
              <s id="N27681">Secundò, per planum inclinatum tuncque ſi globus eſt, rotatur, quia
                <lb/>
              tollitur æquilibrium. </s>
            </p>
            <p id="N27686" type="main">
              <s id="N27688">Tertiò, ita dimittitur globus, vt primò per manum quaſi decliuem ca­
                <lb/>
              dat, tuncque ſimiliter rotatur propter
                <expan abbr="eãdem">eandem</expan>
              rationem. </s>
            </p>
            <p id="N27691" type="main">
              <s id="N27693">Quartò, dimittitur funependulum, & tunc deſcendit per arcum. </s>
            </p>
            <p id="N27696" type="main">
              <s id="N27698">Quintò, dimittitur cylindrus, cuius altera extremitas nititur ſolo, &
                <lb/>
              tunc deſcendit etiam per arcum. </s>
            </p>
            <p id="N2769D" type="main">
              <s id="N2769F">Sextò, dimittitur baculus; </s>
              <s id="N276A2">ſed inæqualiter, ita vt altera eius extremitas
                <lb/>
              cadat, antequam alia dimittatur, & tunc etiam circumagitur baculus; ſed
                <lb/>
              hæc ſunt facilis. </s>
            </p>
            <p id="N276AA" type="main">
              <s id="N276AC">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
                <emph.end type="italics"/>
              5.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N276B9" type="main">
              <s id="N276BB">
                <emph type="italics"/>
              Aliquotâ mobile proiectum excipitur manu multis modis.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N276C2" type="main">
              <s id="N276C4">Primò, firma & fixa manu, in quam cadit eodem modo, quo caderet
                <lb/>
              in parietem, vt patet. </s>
            </p>
            <p id="N276C9" type="main">
              <s id="N276CB">Secundò, manu repellente, tunque eſt maior ictus. </s>
            </p>
            <p id="N276CE" type="main">
              <s id="N276D0">Tertiò, manu ſenſim ſubſidente, vt fallat ictum; </s>
              <s id="N276D4">ſic lapidem ſurſum
                <lb/>
              proiectum cadentem ita excipimus manu, immò & maiorem globum,
                <lb/>
              vt vix vllum ictum ſentiamus; </s>
              <s id="N276DC">quod vt fiat, manus retroagi debet, non
                <lb/>
              quidem pari velocitate cum globo, ſed paulò tardiore motu, vt ſcilicet
                <lb/>
              modicum impetum imprimat globus; </s>
              <s id="N276E4">ſi enim manus pari velocitate
                <lb/>
              moueretur, nullum prorſus impetum imprimeret globus; </s>
              <s id="N276EA">ſi verò non
                <lb/>
              moueretur, ſed omninò manus quieſceret, maximum ictum exceptus
                <lb/>
              globus infligeret; </s>
              <s id="N276F2">ſi verò moueatur ſed paulò tardius aliquid impetus
                <lb/>
              imprimetur ſingulis inſtantibus, donec tandem totus ictus extingua­
                <lb/>
              tur; </s>
              <s id="N276FA">adde quod mollities manus ad extinguendum ictum potiſſimum
                <lb/>
              confert; analogiam habes in lana, quæ tormentorum vim penitus
                <lb/>
              eneruat. </s>
            </p>
            <p id="N27702" type="main">
              <s id="N27704">Quartò, vt longiùs repellatur pila, ſecundus modus adhiberi debet
                <lb/>
              eritque motus mixtus ex directo & reflexo. </s>
            </p>
            <p id="N27709" type="main">
              <s id="N2770B">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
                <emph.end type="italics"/>
              6.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N27718" type="main">
              <s id="N2771A">
                <emph type="italics"/>
              Explicari poſſunt omnia phœnomena tractionis.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N27721" type="main">
              <s id="N27723">Primò, trahitur mobile per productionem impetus; </s>
              <s id="N27727">nec enim po­
                <lb/>
              tentia motrix, quæ reuerâ cauſa eſt tractionis, quidquam aliud produce­
                <lb/>
              re poteſt; </s>
              <s id="N2772F">præterea quod trahitur, verè mouetur; igitur per impetum,
                <lb/>
              ſic differt tractio à mera detentione, de qua ſuprà. </s>
            </p>
            <p id="N27735" type="main">
              <s id="N27737">Secundò, hinc tractio eſt actio potentiæ motricis, qua mobile ipſum
                <lb/>
              propiùs accedit ad motorem; </s>
              <s id="N2773D">nam motor ad ſe trahit mobile; </s>
              <s id="N27741">igitur
                <lb/>
              mobile accedit ad motorem: </s>
              <s id="N27747">quod tantùm dictum ſit de tractione di­
                <lb/>
              recta; nam per reflexam, ipſe motor ad mobile accedit, de qua
                <lb/>
              infrà. </s>
            </p>
            <p id="N2774F" type="main">
              <s id="N27751">Tertiò, quando trahitur aliquod mobile, impetus producitur in om­
                <lb/>
              nibus illius partibus; </s>
              <s id="N27757">probatur, quia omnes mouentur; igitur omnes
                <lb/>
              recipiunt impetum. </s>
              <s id="N2775D">Secundò, quia ſi tantùm in vna produci impetum </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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