DelMonte, Guidubaldo, Le mechaniche

Table of figures

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              <s id="id.2.1.1395.1.0">Dimoſtrate coteſte coſe, egliè manifeſto in qual modo ſi poſſa
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              mouere vn dato peſo da vna data poſſanza. </s>
              <s id="id.2.1.1395.2.0">che ſe con la leua
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              ciò vogliamo menar ad effetto; poſſiamo & con vna data leua
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              mouere vn dato peſo con vna data poſſanza. </s>
              <s id="id.2.1.1395.3.0">La qual coſa
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              non ſi puote già fare del tutto da neſſuno de gli altri diſici,
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              ſia ouero la vite, ouero l'aſſe nella rota, ò pur la taglia, per­
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              cioche nè con le taglie date, nè con vn dato aſſe nella rota, nè
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              meno con vna data vite, ſi puote mouere vn peſo dato da
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              vna poſſanza data; per eſſere in loro ſempre determinata la
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              poſſanza. </s>
              <s id="id.2.1.1395.4.0">Se dunque la poſſanza, che habbia à mouere il pe­
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              ſo, ſarà data minore di queſta, non mouerà il peſo giamai.
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              <s id="id.2.1.1395.5.0">nondimeno poſſiamo dato l'aſſe, & la rota ſenza i raggi moue
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              re vn peſo dato con vna data poſſanza: potendo noi adattare
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              i raggi in modo, che il mezo diametro della rota data inſieme
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              con la lunghezza del raggio habbia al mezo diametro dell'aſ­
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              ſe la proportione data. </s>
              <s id="id.2.1.1395.6.0">la qual coſa iſteſſa puote accadere alla
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              vite ancora; cioè mouere vn dato peſo con vna data vite ſen­
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              za il manico, ò ſtanga con vna data poſſanza. </s>
              <s id="id.2.1.1395.7.0">percioche cono
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              ſciuta la poſſanza, la quale habbia da mouere il peſo ſopra le he
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              lici, poſſiamo diſporre in maniera il manico, ò ſtanga, che la
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              data poſſanza nella ſtanga habbia la forza medeſima, che la
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              poſſanza mouente il peſo ſopra le helici. </s>
              <s id="id.2.1.1395.8.0">& concioſia, che que
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              ſto non poſſa per niun modo auenire alle date taglie; tuttauia
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              poſſiamo mouere vn dato peſo con le date taglie, & con la da
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              ta poſſanza in modi in finiti. </s>
              <s id="id.2.1.1395.9.0">Ma con lo ſtromento del cuneo
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              egli pare eſſere chiaro che non ſi puote già mouere vn peſo
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              dato con vna data poſſanza: percioche vna data poſſanza non
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              puote mouere vn dato peſo ſopra vn piano inchinato all'ori­
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              zonte: nè da vna poſſanza data ſi mouerà vn dato peſo con le
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              leue contrarie fra loro, ſi come ſono nel cuneo; concioſia che
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              non ſi poſſa nelle leue del cuneo mantenere la propria, & ve­
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              ra proportione della leua: percioche i ſostegni delle leue non
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              ſono immobili per mouerſi tutto il cuneo. </s>
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