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

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              rea quòd impulſus reliquus ad plagam continuò maiorem ha­
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              beat rationem. </s>
              <s>Et ſicuti ab intervallo grad: 60 incipit motus
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              orbiculi A; ita motus contiguorum terminatur, ubi contactus
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              non niſi quadrante circuli abfuerit à plagâ. </s>
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              PROBLEMA V.
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              Duo puncta in peripheriâ orbiculi aßignare: in quibus orbiculi ei­
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              dem contigui eadem cum illo velocitate moveantur.
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              <s>Secetur diameter orbiculi TK in ſex partes æquales. </s>
              <s>Sup­
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              ponamus verò TP
                <expan abbr="atq;">atque</expan>
              OK eſſe eiuſmodi ſegmenta: à qui­
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              bus ducantur lineæ perpendiculares LO. GP. </s>
              <s>Dico in pun­
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              ctis L. G orbiculos EC eadem cum A celeritate moveri. </s>
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              <s>Cùm enim PT ſit pars tertia AT; habebit plaga in A ad
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              plagam in P rationem triplam. </s>
              <s>Quòd ſi
                <expan abbr="itaq;">itaque</expan>
              impulſus æqua­
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              lis AT ſit partium 12; erit plagain P partium 4. </s>
              <s>Eſt verò
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              eidem æqualis plagain O; igitur reliquus impulſus in A erit
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                <expan abbr="quoq;">quoque</expan>
              partium 4: ac proinde per poſitionem 4 tres orbiculi A
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              CE: eadem velocitate moventur. </s>
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            <p type="main">
              <s>
                <emph type="center"/>
              PROBLEMA VI.
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              Duo puncta in peripheriâ orbiculi determinare: à quicus orbiculi
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              contigui moveantur, tam ad ſe, quàm ad motum orbiculi his contigui
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              in datâ ratione.
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              <s>Sit proportio data motûs orbiculorum contiguorum tri­
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              pla: motûs verò orbiculi reliqui ad unum ex his ſeſquialtera. </s>
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              <s>Secetur
                <expan abbr="itaq;">itaque</expan>
              ſemidiameter AT in ſex partes æquales: & du­
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              catur linea à ſecundâ diviſione, quæ à centro, perpendicularis
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              producta ad peripheriam: eritq plaga in A ad illam plagamin </s>
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