Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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nauiculæ, quantò illius moles ſuperat huius molem,
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& ideò vis percuſſiua à maiori vi motiua
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pendẽs
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mul
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tò maior eſſe debet, quàm illa, quæ à minori virtute
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motiua producitur; nec mirum eſt ad extinguendam
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maiorem vim motiuam exigi validiorem vim
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tem</
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; hinc fit vt virtus vnius hominis impedire, &
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extinguere poſſit vim puſillam lintrem mouentem̨,
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non verò vaſtam vim motiuam nauigij eodem prorsùs
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modò in pendulis pila lignea, aut minoris ponderis,
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licèt æquè velocitèr moueatur, ac pila grauis plum
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bear iila tamen à minori vi motiua transfertur, cui
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aeris inertia, & corpulentia poteſt eius impetum de
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bilitare, & extinguere, ſed non poteſt æquali reſi
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ſtentia impedire energiam maioris virtutis motiuæ
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grauioris pilæ plumbeæ. </
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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
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grauiũ
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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
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<
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">Ad quartam reſponderi poteſt, falſum eſſe à maio
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ri grauitate meliùs, & faciliùs vinci, & ſuperari me
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dij fluidi r ſiſtentiam. </
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<
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id
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">nam duo funependula æqua
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lia, & inæqualitèr grauia dum oſcillationes ſuas
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ciunt</
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nullam prorsùs grauitatem exercent perindè,
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ac ſi grauia non eſſent, propterea quod æquilibran
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tur à tenacitatibus funiculorum clauibus affixorum.
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</
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<
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">Similitèr libræ ferreæ horologiorum dum conuertun
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tur horizontalitèr grauitate carent, ſeù eam non e
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xercent, ſic quoque inæqualia nauigia innatantią
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dum horizontalitèr mouentur non agunt grauitate,
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quæ ab aqua æquilibratur, & tandem pilæ plumbeæ,
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& ligneæ ſursùm perpendicularitèr proiectæ dum oc
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currunt, & percutiunt ſupremum fluidum, vel corpo-</
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