Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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deris DE impedire poſſumus, ſi eidem termino A ap
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plicaretur vis contraria G, quę traheret ſursùm
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ip
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ſum terminum A per eamdem rectam lineam
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ti</
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perpendicularem verſus ſupremum terminum G;
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& ſiquidem vis, & facultas motiua G æqualis eſſet vi
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ponderis DE, nulla ratio ſuadet quòd vna earum̨
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virtutum reliquam ſuperet, aut vincat, proindequę
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terminus libræ A non deſcendet versùs I, nec aſcen
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det versùs H, ſed omninò quieſcetin eodem ſitu. </
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verò
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DE ſuperaret vim
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motiuã
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G,
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exceſ
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ſus eſſet pondus E, tunc procùl dubio
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põdus
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DE præ
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ualeret ſuperaretque vim motiuam G, & impetus,
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atque vis, à qua prædicta libra flecteretur deorsùm̨
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versùs I menſuraretur à vi ponderis E, quæ eſt diffe
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rentia, ſeù exceſſus, quo pondus premens DE ſupe
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rat vim eleuantem G. </
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Cap. 4. poſi
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tiuam leui
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tatem noņ
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dari.</
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PROP. XLVII.
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Si oppoſitos terminos libræ, vel rotæ duæ potentiæ traham,
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ambæ deorsùm tendendo, ſe mutuò impedient, &
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maior potentia præualebit, ſed vi æquali
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differentiæ earum.
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deſcenſus ponderis DE abſque eò, quòd termi
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no A applicetur vis aliqua animata contraria G, &
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hoc conſequitur ſi applicetur termino oppoſito B
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aliud pondus F, quod dùm deorsùm impellit ad eaſ
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dem partes ad quas dirigitur pondus DE prohibetur </
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