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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<
s
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xml:space
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">Nam cum cauſa movens ſit chordæ Elaſticitas transfertur
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cauſa hæc cum ipſa fibra, quæ reſpectu ipſius quieſcit, quare in
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hanc, licet agitatam, premit quaſi quieſceret hæc, ita ut
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hìc vis movens ſit ejuſdem generis cum gravitate .</
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<
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xml:space
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<
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">æqualibus, ſed inæ-
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">688.</
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qualiter tenſis, vires inæquales requiruntur ut æqualiter
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inflectantur; </
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<
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gunt.</
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<
s
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rum in cycloïdibus vibratorum , & </
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<
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">æquales cycloïdes,
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bus diverſis, deſcribentium; </
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<
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drata temporum vibrationum : </
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<
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xml:space
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drata temporum vibrationum ſunt inter ſe inverſe, ut vires
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quibus æqualiter inflectuntur; </
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<
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chordæ tenduntur .</
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<
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longitudinis, motus harum cum motu pendulorum etiam
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fig. 4.</
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confertur. </
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in corpus, & </
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tate, utrum manente materiâ, ipſa vis gravitatis minuatur
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in certa ratione, an vero manente hac vi materia in ea-
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dem ratione augeatur , quod ergo ad motum chordæ
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iam applicari poteſt . </
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<
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ponderibus æqualibus inflectuntur, agitantur ut corpora in
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quibus gravitates agerent, quæ forent inter ſe ut ab, ad
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AB; </
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in chordis. </
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rum longitudines ſunt ut cB ad Db, aut AB ad ab; </
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<
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quadrata durationum vibrationum, quæ ſunt inversè ut vi-
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res, & </
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<
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tione compoſita ex inverſa ratione ab ad AB, id eſt, AB
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ad ab, & </
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eſt ratio quadratorum longitudinum; </
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<
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gitudines ſunt ut vibrationum tempora.</
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<
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rum diverſæ craſſitiei, poſitis chordis æqualibus, & </
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