Marci of Kronland, Johannes Marcus, De proportione motus figurarum recti linearum et circuli quadratura ex motu, 1648

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              verò ſibi æqualem aut maiorem. </s>
              <s>Suppono verò motum fi­
                <lb/>
              eri in lineâ centri: nam ſi inclinet; quia non totam dat plagam,
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              motum continuabit. </s>
              <s>At verò hoc peculiare habent; quòd
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              non tantùm in lineâ rectâ ſibi contigui fiant; ſed etiam illâ ſu­
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              perficie planâ in ſimilitudinem cylindri aſſurgant. </s>
              <s>Quòd ſi
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              ergo his ita cumulatis illum orbiculum, qui baſis eſt reliquo­
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              rum, percutiat æqualis; eadem ratione movebitur huic con­
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              tiguus, quantumvis illorum numerus, qui baſi incumbunt, au­
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              geatur: quin etiam quovis onere accepto impulſum tranſmit­
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              tit nihilo minorem. </s>
              <s>At verò baſis excuti non eadem facilita­
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              te poteſt: verùm pro numero orbiculorum, aut oneris appen­
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              ſi ratione, neceſſe plagam fieri maiorem. </s>
              <s>Quòd ſi orbicu­
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              lus gravitatem habeat æqualem illi, quâ baſis gravatur, eadem
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              facilitate illam loco movebit: verùm ipſe
                <expan abbr="quoq;">quoque</expan>
              tranſito illo
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              hiatu, motum baſis ſequetur. </s>
              <s>Cuius ratio eſſe videtur:
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              quòd impulſus neceſſariò fiat iuxta determinationem plagæ;
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              licet ſubiectum non moveatur ex eo impulſu: & ſi maior ſit
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              quàm ut in ſubiecto terminetur, aliud percutit ſibi contiguum.
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                <expan abbr="Neq;">Neque</expan>
              minor eſt impulſus ſi ab a lienâ gravitate detineatur; non
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              enim gravitas ab extra veniens, ſed nativa hunc attenuat: quæ
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              multam materiam habet coniunctam. </s>
              <s>
                <expan abbr="Itaq;">Itaque</expan>
              ſi magnitudi­
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              ne non verò gravitate ſint pares; orbiculus maior à minori
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              percuſſus, minorem ex eadem plagâ impulſum reliquis dabit,
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              quàm ſi ab æquali percutiatur: propterea, quòd in multâ ma­
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              teriâ magis hebetatur. </s>
              <s>Vt verò ſubiectum moueatur, ne­
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              ceſſe & gravitatem nativam, & impulſum contrarium ſupera­
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              re. </s>
              <s>
                <expan abbr="Itaq;">Itaque</expan>
              fit ut baſis illius cylindri orbiculati motui renita­
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              tur: quæ & ſuâ & illorum, à quibus premitur, gravitate de­
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              tinetur. </s>
              <s>Quòd ſi gravitas orbiculi augeatur, ut gravitati illius
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              cylindri ſit æqualis: quæ tota in baſim colligitur,
                <expan abbr="atq;">atque</expan>
              illius vi
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              à motu detinetur, percuſſio tum fit æqualis:
                <expan abbr="quouſq;">quouſque</expan>
              nimirum </s>
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