Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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MATHEMATICA. LIB. I. CAP. XIV.
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gula CHD, CAD ; </
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<
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xml:space
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">In hoc
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ergo eſt vis, qua Cuneus intruditur, ad ligni reſiſtentiam, ubi æque pollent, ut ſe-
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mibaſis cunei ad bujus latus.</
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<
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<
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">Machinam ad cunei proprietates demonſtrandum, à ſuperius deſcriptâ
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xml:space
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">215.</
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diverſam, adhibuere alii; </
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tam, eodem tamen principio nixam, conſtrui curavi, quæ hìc exhibetur;</
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quo failat breviter dicam.</
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">In hac cuneus, illi ſimilis cum quo experimenta in noſtra machina inſti-
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">TAB. VII.
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fig. 7.</
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tuuntur, eodem modo ac ubi de noſtra egimus dictum, pondere M inter cy-
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lindros E, E, trahitur; </
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">cylindri autem moventur juxta regulas æneas CC,
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CC, ſuper quibus chalybei axes prominentes ponuntur, & </
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ligneis AA, AA, parallelis inter ſe cohærent. </
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P,P, ſuſpenſis funibus, qui cum lamellis æneis cohærent, in quibus forami-
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na dantur per quæ axes chalybei cylindrorum tranſeunt; </
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in regulis AA, AA, fixis, & </
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">In hac machina datur æquilibrium, ſi vis, qua cuneus intruditur, ſe ha-
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beat ad ſummam ponderum P,P, ut ſemibaſis cunei ad ipſius altitudinem, quæ
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proportio in cuneo locum non habet .</
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tur, obtinent; </
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<
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cohærent; </
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trahuntur; </
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">in noſtra autem machina, ponderibus integris P,P, inter ſe co-
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hærent cylindri.</
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<
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<
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aut plurimis rotis , componi poſſit, & </
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machinis potentia, ut cum reſiſtentia æquè polleat, ſit adre-
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ſiſtentiam, in ratione compoſita ex omnibus rationibus, quas in
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ſingulis machinis potentia ad reſiſtentias baberent, ſi ſepa-
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ratim adhiberentur; </
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machinis compoſitis obtinet.</
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<
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jungi, ex machinis diverſis, variis modis, machina componi
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poteſt; </
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