Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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dendo versùs I, eleuabiturque terminus oppoſitus
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B versùs H, & conatus, ſeù vis, quo libra reuoluitur
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æqualis erit non differentiæ, & exceſſui ponderis D
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ſupra vim F, ſed æquabitur aggregato ambarum vir
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tutum D, & F. </
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no B pondus E æquale vi ſursùm
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impellenti F, pariterque ibidem
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aliud
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G æqua
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le oppoſito ponderi D, manife
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ſtum eſt (amotis, vel coercitis vi
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ribus F, & E) quòd
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põdera
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æqua
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lia D, & G pendentia à terminis
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radiorum æqualium eiuſdem li
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bræ efficient æquilibrium, & ideò
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libra quieſcet. </
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contrariæ ſursùm trahenti F, & ambæ applicantur
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eidem termino B libræ AB (ab æqualibus ponderi
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bus D, & G æquilibratæ) igitur duo pondera ſimùl
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ſumpta G, & E libram impellunt contrario niſu, ſci
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licet à B verſus I, & præcisè adæquant conatum pon
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deris D, & vim trahentem F, quæ ambo deprimere
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poſſunt terminum libræ A versùs I ſubleuando ter
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minum B versùs H. </
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<
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tæ</
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(amotis ponderibus G, & E) determinant vim,
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ſeù conatum, quo libra reuolui debet ab A, versùs I. </
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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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Pr. 47.</
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Pr. 46.</
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<
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">Et hìc animaduertendum eſt, quòd duæ vires D,
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& F, quæ reuerà contrariæ ſunt inter ſe (
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illa deor
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sùm comprimat, hæc verò ſursùm trahat) non ſibi
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mutuò opponuntur, nec vna earum alteriùs motum̨ </
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