Jordanus de Nemore, [Liber de ratione ponderis], 1565
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                derit ad f, sit e, in exitu. </s>
                <s id="id.2.44.04.02">Item quum c, fuerit in u, fit f, e, in 3. </s>
                <s id="id.2.44.04.03">quare ergo
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                quo plus descenderit, ponderosius erit c, ponderosius in u, f, quám in a,b.
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                <s id="id.2.44.05.01">Quia uero dum e, peruenit in u, f, pertingit c, in 3. t, longius erit a, f, quám
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                f, 3. quia gracilius continue, quia partes uelociores, et sic tandem adrum­
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                puntur.
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                <s id="id.2.44.06.01">Si res inaequalis ponderis in partem quamcunque impellantur, pars gra
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                uior occupabit.
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                <s id="id.2.44.07.01">Sit quod impellit a, b, pars grauior a. </s>
                <s id="id.2.44.07.02">Si ergo impellatur ex parte a, et
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                b, impellatur, quoniam leuius est, facilius cedet pulsui. </s>
                <s id="id.2.44.07.03">quumque facilitatem
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                eius non sequatur a, frustrabitur quidem in se, et grauitate a, adiuuabit;
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                sicque totus uisus reuertetur ad a, habet ergo praecedere in suo impetu trahe
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                re b. </s>
                <s id="id.2.44.07.04">Si uero b, posterius impellatur, et praecedat a, impulsum quidem b, im
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                pellet a, leuitas 3. attrectabitur mouendo a, et ideo prius impelletur a, quia
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                motum ipsius plus impedit, totoque conatu in plurium habebit trahere b, ea
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                finiter liber Ioradam de ratione ponderis.
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                <s id="id.2.44.08.01">Et sic finit. </s>
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