Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

Table of figures

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              nem ligni procerioris, quod cum lignum ita ſuſpenſum, ſi­
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              mul conſtituatur vectis, & onus, fulcimentum habens prope
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              alterum extremum in manu à qua eleuatur; quanto exten­
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              ſius fuerit id quod à fulcimento eſt verſus alteram extremi­
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              tatem, quæ conſtituitur pondus; tanto magis ipſum inflecti
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              neceſſe eſt, ſuppoſito quod vectis ipſa ſeu lignum, ex ſe fle­
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              ctile ſit; id quod non contingit in breuibus lignis, aut vecti­
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              bus etiam ſi eadem ſeruetur proportio: Porrò extremum,
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              quod grauitat parum ſemper diſtat à fulcimento. </s>
              <s id="N14DC1">Sit enim
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              ſariſſa decem cubitorum longitudinis aliquantulum incli­
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                <figure id="id.005.01.172.1.jpg" xlink:href="005/01/172/1.jpg" number="60"/>
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              nata ipſa AB, cuius manubrium A, cuſpis B, ſuffulta di­
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              gitis vbi C, pollice præ mente in A tanquam potentia
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              eleuante. </s>
              <s id="N14DD2">
                <expan abbr="Eodemq">Eodemque</expan>
              pacto conſtituatur gracilior ſurculus
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              bicubitus DE fultus in F. </s>
              <s id="N14DD9">Dico igitur ſariſſam magis in­
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              clinari quàm ſurculum, eo quod licet vtrumque habeat ra­
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              tionem vectis ſimul & oneris; pondus tamen conſtitutus in
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              B magis diſtat à fulcimento C, quàm quod
                <expan abbr="cõſtituitur">conſtituitur</expan>
              in E
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              ab ipſo F;
                <expan abbr="magisq.">magisque</expan>
              propterea grauitat, & inclinat deorſum,
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              paulatim recedendo à rectitudine, quam ſtans, vel in ſolo
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              iacens habebat. </s>
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              <s id="N14DF2">Quod non abs re fuerit aliundè etiam confirmare, ac vl­
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              terius declarare, notando prius ad inflexionem
                <expan abbr="cõtinui">continui</expan>
              duo
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              neceſſario requiri. </s>
              <s id="N14DFD">Vnum eſt determinata, ac proportiona­
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              ta quædam virtus ſiue ponderis, ſiue motricis potentiæ, ita
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              vt ab alia minori nulla cauſari poſſit talis inflexio. </s>
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                <expan abbr="Quõd">Quod</expan>
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              certè
                <expan abbr="cõmune">commune</expan>
              eſt omnibus cauſis naturalibus reſpectu pro­
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              priorum effectuum, ad quos ordinantur. </s>
              <s id="N14E12">Alterum verò eſt </s>
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