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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poteſt. </
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iam magni uſus; </
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actione corporum, quæ comprimuntur, aut gravitate pon-
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derum quæ elevantur, ceſſante actione potentiæ, motu con-
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trario non agitatur, & </
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<
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<
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ulterius findendum ope cunei ACB, cujus baſis eſt AB, & </
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fig. 6.</
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tudinem menſurat CD.</
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<
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">Ubi partes, ut ſuperius monuimus, quantumvis parum ſeparantur, omnis
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tollitur reſiſtentia; </
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<
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xml:space
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">antequam autem ſeparentur partes in F, puncta E, L,
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paululum moveri debent, id eſt augendus eſt angulus E F L; </
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<
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terminaada ideò eſt vis, qua angulus hic augeri poteſt.</
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<
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</
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<
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">partes ligni E, L, translatæ fuere per E e, L l, ſed quæ minus ab F diſtant
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per minus ſpatium moventur, lineæque EF, LF, motibus ſuis deſeribunt
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areas triangulorum æqualium inter ſe F E, l FL.</
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<
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<
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</
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<
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">& </
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<
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angula e F E & </
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<
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ambarum EF, LF, conjunctæ, valent translationem ſolius lineæ E F per ſpa-
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tium E e aut F f: </
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<
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">quæ lineola ergo diſtantiam repræſentat, qua partes ligni à
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ſe invicem ſeparantur, cum autem de hac ſeparatione hìc agatur, eſt hæci-
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pſa lineola ſpatium, ab obſtaculo quod ſuperandum eſt, percurſum, dum
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ſpatium, quod percurrit potentia, eſt C c, ſpatium nempe per quod cuneus
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fuit tranſlatum.</
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<
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lent, ut e E ad C c. </
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<
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latus cunei AG fuit tranſlatum;</
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<
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culi, adeo exiguus ut pro rectâ lineâ haberi poſſit; </
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F E.</
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<
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veniens in H & </
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ctum; </
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<
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<
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<
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triangula C gc, DHC; </
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<
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nei, ut g C ad C c, id eſt, ut vis qua cuneus intruditur ad ligni reſiſtentiam, quan-
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do neutra alteram vincere poteſt, auctâ paulum potentiâ ſeparantur ligni par-
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tes.</
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<
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& </
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