Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

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        <body>
          <chap id="N10019">
            <p id="N17962" type="main">
              <s id="N17998">
                <pb pagenum="259" xlink:href="005/01/267.jpg"/>
              to, quod motus naturalis ſucceſsiuè ſemper fiat velocior,
                <lb/>
              at que velocior in partibus poſterioribus vſque in finem
                <lb/>
              cum ſemper grauitas perſeueret in eadem intentione,
                <expan abbr="mi-nusq.">mi­
                  <lb/>
                nusque</expan>
              reſiſtat intermedium, nec non & maiori ſemper feran­
                <lb/>
              tur impulſu ab eiſdem grauibus in eodem motu produ­
                <lb/>
              cto: motus autem violentus licet in progreſſu vſque ad
                <lb/>
              certum terminum ſimiliter fiat velocior, tandem lan­
                <lb/>
              gueſcente impetu rurſus incipiat retardari quouſque deſi­
                <lb/>
              nat in quietem, vel degeneret in motum naturalem cor­
                <lb/>
              rupta penitus virtute motiua ipſius impetus à proijciente
                <lb/>
              impreſſa. </s>
            </p>
            <p id="N179BC" type="main">
              <s id="N179BE">Cæterum hic etiam determinandum videtur, qua ratio­
                <lb/>
              ne, vel cauſa corpus pendens à fune poſtquam aliquandiu
                <lb/>
              fuerit ex ſe huc atque illuc circulariter agitatum, ſeu per
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              portionem peripheriæ
                <expan abbr="circumlatũ">circumlatum</expan>
              ,
                <expan abbr="tandẽ">tandem</expan>
              ceſſet à latione, ac
                <lb/>
              per lineam tendentem ad mundi centrum quieſcat. </s>
              <s id="N179D1">Suppo­
                <lb/>
              nimus enim id ſæpè contingere, nulla adhibita violentia per
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              ſolam remotionem prohibentis. </s>
              <s id="N179D8">Nam ſi per funem alicubi
                <lb/>
              religatum corpus aliquod inde propendens detineatur, non
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              quidem perpendiculariter ad horizontem, ſed aliquantu­
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              lum ex latere, ac liberè poſtea relinquatur ſtatim ex ſe cir­
                <lb/>
              culariter illud deſcendere, ac rurſus aſcendere conſpicie­
                <lb/>
              mus, huc atque illuc arcus deſcribendo,
                <expan abbr="eosq;">eosque</expan>
              ſucceſsiuè
                <lb/>
              diminuendo quouſque tandem quieſcat in puncto per quod
                <lb/>
              à loco detentionis funis ad mundi centrum rectà deduci­
                <lb/>
              tur. </s>
              <s id="N179EF">Difficultas autem in eo conſiſtit, quod cum huiuſmodi
                <lb/>
              motus ex parte ſit obliquus
                <expan abbr="quidã">quidam</expan>
              aſcenſus, & ex parte
                <expan abbr="de-ſcẽſus">de­
                  <lb/>
                ſcenſus</expan>
              , nec à grauitate
                <expan abbr="dũtaxat">duntaxat</expan>
              videtur poſſe procedere, nec
                <lb/>
              ab alia ſimul virtute impreſſa, quæ moueat in
                <expan abbr="cõtrariũ">contrarium</expan>
              : præ­
                <lb/>
              ſertim
                <expan abbr="cũ">cum</expan>
              nulla appareat cauſa effectiua talis virtutis; niſi di­
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              catur ab eodem graui manare ( vt præcedenti quæſtione
                <lb/>
              probatum eſt ) quod cum operetur per grauitatem intrinſe­
                <lb/>
              cam, quæ iugiter perſeuerat in ipſo, iugiter etiam talem vir­
                <lb/>
              tutem in ſe conſeruaret, quæ propterea nunquam ceſſaret à
                <lb/>
              motu alterno iam explicato,
                <expan abbr="ſicq.">ſicque</expan>
              corpus per funem pro­
                <lb/>
              pendens, ſemel promotum, alternatim ac ſemper, ſeu pe­</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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