Fabri, Honoré, Tractatus physicus de motu locali, 1646

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          <chap id="N24CC8">
            <p id="N26C2C" type="main">
              <s id="N26C59">
                <pb pagenum="370" xlink:href="026/01/404.jpg"/>
              ſi ſupra planum horizontale BA v. g. ſit cylindrus CB extans aliqua
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              ſui parte putà FC; </s>
              <s id="N26C68">ſi percutiatur baculo ED in C, aſſurget propter
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                <expan abbr="eãdem">eandem</expan>
              rationem motu mixto; </s>
              <s id="N26C71">nam primò circa centrum F deprimi­
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              tur C, & attollitur B; </s>
              <s id="N26C77">B quidem velociore motu, vt patet; igitur ſecum
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              attollit extremitatem oppoſitam C motu mixto propter rationem iam
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              ſuprà allatam. </s>
            </p>
            <p id="N26C7F" type="main">
              <s id="N26C81">Vigeſimoquartò, AB ſi baculus in aëre libratus perpendiculariter. </s>
              <s id="N26C84">
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              v. g. percutiatur altero baculo ED. Primò, in centro grauitatis C
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              baculi AB, mouebitur AB motu recto; </s>
              <s id="N26C8F">ratio eſt, quia omnes partes mo­
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              uentur æqualiter; igitur motu recto. </s>
              <s id="N26C95">Secundò, tunc erit maximus
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              iactus, ſi ED percutiat C, ita vt EC media proportionalis inter ED,
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              & eius ſubduplam EG; </s>
              <s id="N26C9D">quia ED producit maximum impetum & to­
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              tum; eſt enim C centrum grauitatis impetus totius ED, & centrum gra­
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              uitatis corporis impedientis AB. Tertiò, hinc ſi ED feriat in puncto G,
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              non erit tantus iactus licèt AB proijciatur motu recto. </s>
              <s id="N26CA7">Quartò, ſi
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              percutiatur in F, non mouebitur motu recto, vt conſtat experientiâ; </s>
              <s id="N26CAD">
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              quippe maior impetus producetur in extremitate B, quàm in A; </s>
              <s id="N26CB2">igitur
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              non mouebitur motu recto, ſed mixto circa centrum mobile H. Quintò,
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              non producetur totus impetus, qui poteſt produci ab ipſo ED; </s>
              <s id="N26CBA">quia
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              non impedietur totus, vt patet: quippe extremitas B faciliùs cedit. </s>
              <s id="N26CC0">
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              Sextò, quo punctum ictus accedet propiùs ad extremitatem B, minor
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              erit motus centri,
                <expan abbr="maiorq́ue">maiorque</expan>
              motus circularis, & conſequenter minor
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              iactus, & contrà, quò punctum ictus accedet propiùs ad centrum C.
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              Septimò, ſunt 6. ictuum combinationes in hoc caſu; </s>
              <s id="N26CCF">nam vel ictus
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              cadet in centrum grauitatis C baculi AB vel extra; ſi primum, tribus
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              modis id fieri poteſt. </s>
              <s id="N26CD7">Primò, ſi centrum grauitatis impetus baculi ED
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              feriat ſcilicet ipſum C. Secundò, ſi aliud punctum inter CD putà K.
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              Tertiò, ſi aliquod inter CE putà G; </s>
              <s id="N26CDF">ſi verò ſecundum iiſdem tribus mo­
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              dis fieri poteſt, ſed de his ſatis; ſupereſt tantùm, ni fallor, vt ea phœno­
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              mena, quæ in tudiaria gladiatura obſeruari poſſunt, eorumque cauſas
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              explicemus, ſed illud præſtabimus in lib. ſequenti. </s>
            </p>
            <p id="N26CE9" type="main">
              <s id="N26CEB">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
                <emph.end type="italics"/>
              13.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N26CF7" type="main">
              <s id="N26CF9">
                <emph type="italics"/>
              Explicari poſſunt omnia phœnomena turbinis ſen trochi circumacti
                <emph.end type="italics"/>
              : </s>
              <s id="N26D02">Tur­
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              binum puerilium duo ſunt genera: primum eſt eorum, qui ferro mu­
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              niuntur, qui certè diuerſæ ſunt figuræ, ſphæricæ, conicæ &c. </s>
              <s id="N26D0A">communi­
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              ter tamen fiunt iuxta figuram cordis, vt vides in A. </s>
              <s id="N26D10">Secundum eſt eo­
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              rum, qui ferro carent, quorum ſunt etiam diuerſæ figuræ, communior eſt
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              conois, vt vides in</s>
            </p>
            <p id="N26D17" type="main">
              <s id="N26D19">Primò, circumagitur vel ſcutica vt B, vel funiculo intorto vt A:
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              vtriuſque ratio eadem eſt; cùm enim circumuolutus funiculus reduci­
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              tur, haud dubiè trochum ipſum in orbem agit. </s>
            </p>
            <p id="N26D21" type="main">
              <s id="N26D23">Secundò, cum mouetur trochus circa axem CD immobilem, eſt mo­
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              tus purè circularis. </s>
            </p>
          </chap>
        </body>
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    </archimedes>
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