Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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181 - 210
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331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
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PHYSICES ELEMENTA
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poteſt, ita ut corporis vis minuenda ſit, ſi hujus inertia, id
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eſt, materiæ quantitas augeatur, ut in utroque
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xml:space
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æqualiter alii corpori reſiſtat, unde paradoxi explicationem
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deducimus. </
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<
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xml:space
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">Nam, ut ex hac obſervatione ſequitur, Quando
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">509.</
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duo corpora in ſe mutuo incurrunt, duæ dantur actiones, & </
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duæ reactiones, utraque actio ſuæ reactioni æqualis eſt; </
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<
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corpora quieſcant poſt ictum, non requiritur ut ante ictum
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vires contrariæ ſint æquales, ſed ut utrumque corpus
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patiatur reſiſtentiam talem, ut agendo poſſit vim ſuam con-
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ſumere.</
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<
s
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xml:space
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">Ex demonſtratis facile deducimus quomodo datis corpo-
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ribus, & </
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<
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">horum velocitate reſpectiva, vis ictu deſtructa de-
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terminetur: </
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<
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">determinatâ, nempe ſummâ virium, poſitis, eâ-
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dem velocitate reſpectivâ, motibus contrariis, & </
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<
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">497. 500.</
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tibus in ratione inverſa maſſarum . </
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<
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<
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xml:space
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">ſequenti demonſtramus, Si produ-
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ctum maſſarum per quadratum velocitatis reſpectivæ multi-
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plicetur, & </
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<
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<
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7.</
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xml:space
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<
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fig. 1.</
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rato, redacto hoc ad pondus cylindri D, id eſt ſint maſſæ ut
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tria ad duo; </
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xml:space
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">incurrant corpora hæc in ſe mutuo dum am-
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bo in contrarias partes feruntur, majus velocitate ſeptemde-
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cim, minus velocitate tria, in quo caſu velocitas reſpe-
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<
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xml:space
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ctiva eſt viginti . </
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<
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reſpectivæ eſt 400. </
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rum eſt 2400; </
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maſſarum habemus, vim amiſſam 480. </
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determinari demonſtramus.</
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<
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289. </
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cando 9. </
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Poſt ictum maſſa eſt 5 & </
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ſupereſt vis 405, quæ ſi ſubducatur ex 885. </
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te vim amiſſam 480.</
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