Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 135
A P, B Q, and GR be the former, and A P, B Q, and GR, the latter of these components. In the similar triangles P A P, RGR, and QBQ,we have, denoting the components AP, GR, and BQ,by P, R\ and Q, respectively, P P R Rn _o_ <r_t R R 130 NATURAL PHILOSOPHY. and from the similar triangles KA a, K… … moments of theparallelcomponents; The effective quan-tity of work per- Fg- 56-formed by each ofthe forces P, Q, andR, may be replacedby the algebraic sumof the quantities ofwork performed byits components; butthe effective quanti-ties of work of the components which are parallel to the line KL,…
Mechanics · Acoustics · Optics
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