The science of mechanics; a critical and historical account of its development (1902)
Mach, Ernst, 1838-1916, McCormick, Thomas Joseph, 1865- tr · Chicago, The Open court publishing company; · leaf 63
shed un-til after its authors death), and made, by the aid of ageometrical theorem, extended practical applicationof it.* The geometrical theorem referred to is this. If weconsider (Fig. 29) a parallelogram the sides of whichare/ and q, and the diagonal is r, and from any point m in the plane of… … Fig. 29. Fig. 30. to the extremities of the diagonal and of the sides ofthe parallelogram, and considering the areas of thetriangles thus formed, which are equal to the halvesof the products specified. If the point ia be takenwithin the parallelogram and perpendiculars then be * In the same year,…
Mechanics
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