Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

Table of figures

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              <s id="s.002223">
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              dimus prop. 20. 21. & 204. partes æquales eiuſdem
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              grauis ex ſui natura eadem velocitate fluere deorsùm
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              debent, & deò ſuperior pari velocitate comprime­
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              re nitetur inferiorem, qua hæc ictum fugit, & proin­
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              de grauitas ſuperioris non augebit vim
                <expan abbr="compreſſiuã">compreſſiuam</expan>
              ,
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              ſeu grauitatem inferioris; perindè ergò operatur
                <expan abbr="põ-dus">pon­
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                dus</expan>
              vnius partis ac ſr æquale eſſet ponderi aggregati
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              omnium partium. </s>
              <s id="s.002224">ex quo fit vt in motu deſcenſus
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              quælibet corpora inæqualia æquè grauia cenſeri poſ­
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              ſint; ideoque non deſcendent in æqualibus veloci­
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              tatibus, neque nouum eſt vim, & energiam decem
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              hominum ſuſtinere poſſe maius pondus nempè decu­
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              plum, quàm vnus eorum, ſed non indè ſequitur, quod
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              prædicti homines currere poſſint baiulando eadem̨
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              pondera velocitate decies maiori, quam vnus
                <expan abbr="eorũ">eorum</expan>
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              tantùm, itaque licèt velocitas curſus dependeat à vi,
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              & energia prædictorum hominum, non proindè ve­
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              locitas augetur
                <expan abbr="multiplicaturq;">multiplicaturque</expan>
              prout homines præ­
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              dicti multiplicantur. </s>
              <s id="s.002225">Vnde patet infirmitas primæ
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              obiectionis.
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              Cap. 10. de
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              æquitempo­
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              ranea natu­
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              rali veloci­
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              tate
                <expan abbr="grauiũ">grauium</expan>
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                <expan abbr="Reſpõdetur">Reſpondetur</expan>
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              ſecundæ.</s>
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              <s id="s.002228">Ad ſecundam noto, nos quærere an duo corporą
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              grauia dum naturali, libero, & non impedito motu
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              feruntur inæqualibus velocitatibus deſcendant, ſci­
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              licèt in eadem proportione, quam grauitates habent.
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              <s id="s.002229">ergo prauè, & contra logices præcepta aduerſarius
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              permutat ſubiectum problematis, cùm
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              aſſumit
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              non duo mobilia grauia, ſed vnum, & in eo quærit
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              motus partium in ſuo toto, quæ nequeunt libero, &
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              non impedito motu deſcendere niſi ex parte. </s>
              <s id="s.002230">talis </s>
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