Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

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              curis ipſa efficitur cuneus. </s>
              <s id="N15451">Paruus autem exiſtens cuneus
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              magna diuidit, cùm ex duobus ſit vectibus, contrario ad ſe in­
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              uicem modo constitutis.
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            <p id="N1545A" type="head">
              <s id="N1545C">COMMENTARIVS.</s>
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              <s id="N15462">Tam quæſtionis propoſitio quàm dubitandi ratio
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              per ſe eſt manifeſta, ex quo nimirum contingat, vt
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              ſi quis ſuper lignum magnam imponat ſecurim,
                <expan abbr="de-ſuperq.">de­
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                ſuperque</expan>
              ingens illi adijciat pondus, nihil conſideratione di­
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              gnum, aut alicuius momenti diuidat; ſi verò ſecurim ipſam
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              extollens percutiat, illud ſcindat, etiam ſi multo minus illa
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              habeat ponderis, quam id quod ſuperiacet, ac præmit.
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              </s>
              <s id="N15476">Quod profecto ex eo euenire docet, quia cum omnia motu
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              fiant, & graue ipſum maiorem grauitatem acquirat per mo­
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              tum, magis etiam mouet dum mouetur, quàm dum quie­
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              ſcit. </s>
              <s id="N1547F">Quare licet maior ſit grauitas innata totius incumben­
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              tis oneris quod præmit, nempe ſecuris cum ſuperadiecto
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              pondere, quàm ſit ſolius motæ ſecuris; nihilominus dum
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              prius elata ſecuris deijcitur, non modò operatur per inna­
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              tam ſibi grauitatem, ſed per eam, quam in ipſo motu acqui­
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              rit, & per impetum à percutiente impreſſum. </s>
              <s id="N1548C">Vnde mirum
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              non eſt, ſi tune efficacius percutiat, ac ita percutiendo
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              ſcindat lignum, quod percutit. </s>
              <s id="N15493">Præſſio namque oneris
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              ab vna tantum cauſa grauitante ſine locali motu proce­
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              dit; percuſſio verò ſecuris à duplici, vel triplici cauſa im­
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              pellente, à qua mixtus quidam, violentiſsimus efficitur
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              motus. </s>
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            <p id="N1549E" type="main">
              <s id="N154A0">Quod autem motus penderi addat pondus, ſeu grauitas
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              augeatur in motu, ac propterea efficacius operetur, explo­
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              ratiſsimum eſt, non modo in ijs, quæ cadunt ex alto (nam
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              quò magis à principio motus diſceſſerint, eò velocius ipſa
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              deorſum ferri conſpicimus,
                <expan abbr="magisq.">magisque</expan>
              impellere non ſecus ac
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              corpora grauiora;) ſed in reliquis quoque motibus proie­
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              ctorum, quorum pondus magis operatur in motu, quam in-</s>
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