Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              applicata, & non impedita non agit; </s>
              <s id="N134D2">at verò agit impedita; </s>
              <s id="N134D6">ſcilicet
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              impetus qui tantùm agit, vt tollat impedimentum; igitur, ſi non
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              impediatur non agit. </s>
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            <p id="N134DE" type="main">
              <s id="N134E0">
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              Theorema
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              49.
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              </s>
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            <p id="N134EC" type="main">
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              Quo minùs impeditur impetus, minùs agit ad extra, & contrà; quo plùs
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              impeditur, plùs agit.
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              </s>
              <s id="N134F8"> Cum enim ideò agat ad extra, vt tollat impedi­
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              mentum; </s>
              <s id="N134FE">certè ſi nullum eſt, nihil agit, ſi minùs, minùs agit; igitur
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              agit pro rata, id eſt, pro diuerſa impedimenti ratione. </s>
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            <p id="N13504" type="main">
              <s id="N13506">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              50.
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              </s>
            </p>
            <p id="N13512" type="main">
              <s id="N13514">
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              Si linea motus, quam directionis appellant, ducatur per centrum vtriuſque
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              corporis, maximum est impedimentum,
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              vt patet. </s>
              <s id="N1351E">ſint enim duo globi,
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              A mobilis, & B. occurrens ipſi A, ſitque linea directionis DE ducta
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              per centrum vtriuſque AB, & punctum contactus ſit C; </s>
              <s id="N13526">certè glo­
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              bus B maximum ponit impedimentum, quod ab eo poni poſſit; </s>
              <s id="N1352C">Igitur
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              impetus globi A agit quantùm poteſt in globum B; vt ſcilicet maxi­
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              mum impedimentum remoueat. </s>
            </p>
            <p id="N13534" type="main">
              <s id="N13536">
                <emph type="center"/>
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              Theorema
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              51.
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              </s>
            </p>
            <p id="N13542" type="main">
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              Si linea motus vel ipſius parallela cadat perpendiculariter in extremam
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              diametrum globi immobilis: </s>
              <s id="N1354C">haud dubiè nihil impedit
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              ; </s>
              <s id="N13553">ſit enim globus
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              mobilis A, Immobilis B, linea directionis ſit GA, ipſi parallela FC; </s>
              <s id="N13559">
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              certè globus B. non impedit motum globi A. cum nihil loci globi B
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              occupari debeat à globo A; Igitur impetus A non agit in globum B per
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              Th. 48. </s>
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            <p id="N13562" type="main">
              <s id="N13564">
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              Theorema
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              52.
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              </s>
            </p>
            <p id="N13570" type="main">
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              Si linea motus ſit inter vtramque; </s>
              <s id="N13578">est minus impedimentum.
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              ſit globus
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              immobilis BA; </s>
              <s id="N13581">ſit linea motus GC cum impedimento, de qua in Th. 50.
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              ſit alia KB cum nullo impedimento, de qua in Th. 51. ſint aliæ HD,
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              IE; </s>
              <s id="N13589">certè minus eſt impedimentum in contactu D, quàm in C; </s>
              <s id="N1358D">quia ca­
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              dit obliquè in D, perinde atque ſi caderet in tangentem NO; Igitur
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              minus impeditur; in qua vero proportione, dicemus aliàs, cum de re­
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              flexione, & de motu mixto. </s>
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            <p id="N13597" type="main">
              <s id="N13599">
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              Theorema
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              53.
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              </s>
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              Hinc producitur in contactu
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              C,
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              totus impetus; </s>
              <s id="N135B3">in contactu
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              D,
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              minùs; </s>
              <s id="N135BD">in
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              contactu
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              E
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              adhuc minùs; </s>
              <s id="N135C9">in
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              B
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              nihil
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              ; </s>
              <s id="N135D6">quia in ea proportione producitur
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              plùs vel minùs impetus, quo plùs eſt, vel minùs impedimenti per
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              Th. 49. ſed minùs eſt impedimentum in E, quàm in C; </s>
              <s id="N135DE">& in E, quàm
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              in D, per Th. 52; Igitur in D producitur minùs impetus, quàm in C,
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              & minùs in E, quàm in D. </s>
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            <p id="N135E7" type="main">
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                <emph type="center"/>
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              Theorema
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              54.
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              </s>
            </p>
            <p id="N135F5" type="main">
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              Hinc eadem cauſa neceſſaria etiam immediate applicata diuerſum impe
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              </s>
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