Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

Table of figures

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              ſolutione. </s>
              <s id="N1430F">Scribit enim facilius ac celerius tolli, ac trahi
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              pondera per maiores circulos, quàm per minores. </s>
              <s id="N14314">Conſti­
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              tuitque exemplum de trochleis, ac ſcytalis, quæ ſi maiores
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              ſint, aptius onera mouent. </s>
              <s id="N1431B">Quod falſum omnino eſſe cona­
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              tur oſtendere Blancanus ex Guido Vbaldo. </s>
              <s id="N14320">Nam ſimplex
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              trochlea per rotulam cui funis ſupernè inditur nullas addit
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              vires potentiæ mouenti, eo quod reducatur ad vectem, cu­
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              ius fultura eſt in medio ipſius. </s>
              <s id="N14329">Vnde ſiue rotula illa magna
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              fuerit ſiue parua, ſemper eadem ratione nullam augere po­
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              teſt facilitatem, aut velocitatem in hac motione. </s>
              <s id="N14330">Subdit que
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              Blancanus, experientia quoque conſtare eodem labore
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              aquam hauriri, ſiue rotula illa magna fuerit ſiue parua. </s>
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              <s id="N14339">Verum ſi hoc vniuerſaliter demonſtraret experientia, fru­
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              ſtra paſſim adhiberentur trochleæ ad leuanda, ac trahenda
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              pondera; nec eſſet cur iuxta maiorem ponderum grauita­
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              tem, maioribus rotis, ac trochleis
                <expan abbr="vterẽtur">vterentur</expan>
              Architecti quan­
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              do minoribus vti poſſent. </s>
              <s id="N14348">Quamuis igitur ſimplex trochlea
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              ſupernè appenſa nullam addat vim potentiæ motrici, ſicut
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              nec vectis, cuius fulcimentum non ſit propinquius oneri;
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              multam tamen affert commoditatem. </s>
              <s id="N14351">Vnde eadem quip­
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              pè vi, ſed; non eodem labore eleuatur onus beneficio tro­
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              chleæ, aut vectis prædicti, quàm ſine illis. </s>
              <s id="N14358">Commoditas enim
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              minuit laborem, ac ſi non auget potentiam, confert tamen
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              ad applicationem, & exercitium illius: id quod eſt augere
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              facilitatem. </s>
              <s id="N14361">Rurſus quæcumque ſit facilitas, qua rotis, vel
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              trochleis pondera leuantur, certum eſt velocius ea leuari
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              maioribus, quàm minoribus rotis; ſed hoc ipſum eſt faci­
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              lius mouere, quia licet non omnis facilitas includat veloci­
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              tatem, vt pater in pluribus machinis tractorijs, quæ facilius,
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              ſed tardius mouent; nihilominus velocitas ſemper inuoluit
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              facilitatem; Ergo nihil contra experientiam aſſumpſit Ari­
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              ſtoteles, vt Blancanus contendit. </s>
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              <s id="N14374">Baldus item ait non eſſe ſimpliciter verum idipſum, quod
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              Philoſophus aſſerit, vt ſcilicet quo maiores fuerint trochleæ,
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              eò facilius moueant. </s>
              <s id="N1437B">Quia tam maior, quàm minor trochlea
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              per eius centrum grauitatis diuiditur à perpendiculari ea-</s>
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