Baliani, Giovanni Battista, De motv natvrali gravivm solidorvm et liqvidorvm
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                <s id="s.000274">PROPOSITIO XX. PROBL. XII.</s>
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              <subchap2 n="20" type="statement">
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                  <s id="s.000275">Datis duobus planis diverse inclinatis lon­
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                  gitudinis notae; & nota diuturnitate gra­
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                  vis moti super uno, reperire diuturnita­
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                  tem si moveatur super alio.
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                  <s id="s.000276">Sint plana AB, CD inclinata, & sit data diu­
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                  turnitas E plani AB.</s>
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                  <s id="s.000277">Oportet reperire diuturnitatem plani CD.</s>
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                  <s id="s.000278">Fiat AF, paralella, & aequalis datae CD, in qua
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                  reperiatur punctum G quo perveniat grave,
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                  tempore quo in B
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                  , unde E est etiam diuturnitas
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                  spatij AG, quo dato, & spatio AF perquiratur
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                  eias diuturnitas, quae sit H
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                  , & dico H esse
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                  diuturnitatem quae grave descendit in CD.</s>
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                  Per 17. huius.</s>
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                  Per 9. huius.</s>
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                  <s id="s.000281">Quoniam E, H sunt diuturnitates gravium de­
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                  scendentium in AG, seu AB, & AF, per con­
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                  structionem, & AF est aequalis, & paralella
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                  datae CD per constructionem, sunt etiam E, H
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                  diuturnitates ipsarum AB, & CD
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                  , unde
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                  reperta est diuturnitas ipsius CD. </s>
                  <s id="s.000282">Quod, etc.</s>
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                  Per 3. pron.</s>
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