Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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PHYSICES ELEMENTA
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<
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<
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1.</
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<
s
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cui circumpo ſitus funis ductarius dictus, Trochlea ex-
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48. 19.</
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hibetur in A, funis ductarius eſt d c e.</
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<
s
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">Hac Machinâ potentiæ directio mutatur, nec ullîus alîus
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uſus eſt, quando ſuo loco eſt fixa; </
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<
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ſeu potentia, funi ductario applicata, ut M, æqualis impedi-
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mento P, æquipollet impedimento ; </
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<
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non poteſt, quin impedimentum eodem tempore ſpatium
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æquale percurrat.</
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<
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gulis corporibus comparantur , adhibitâ librâ aut
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inſtrumento notiſſimo.</
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<
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2.</
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potius rotatur.</
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<
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3.</
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<
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axis conſideratur ut punctum, & </
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<
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4.</
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<
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in quibus vel actu ſunt, vel liberè dependent pondera, aut lan-
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ces, quibus pondera imponuntur.</
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deat, ad quamcunque altitudinem, ac ſi pondus in ipſo poſitum
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intelligeretur.</
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hit funem quo ſuſpenditur .</
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<
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1.</
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fig. 2.</
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ditur altitudines; </
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