. A text book of elementary mechanics, for the use of colleges and schools. Fig. 61. abede, is the resultant of ad and de, that is of the fourgiven forces P, Q, 8, T. The numerical calculation of the magnitude anddirection of the resultant in accordance with this con-struction, following the method already given (130), in-volves considerable labor. A more simple method isgiven in a subsequent article (140). 136.] COMPOSITION OF FORCES. 141 S^ 4 s i fa i X ii JP J^ \ yS* B Ji 135. Forces not in the same Plane. The method offinding the resultant of any number of forces acting ona particle, given
. A text book of elementary mechanics, for the use of colleges and schools. Fig. 61. abede, is the resultant of ad and de, that is of the fourgiven forces P, Q, 8, T. The numerical calculation of the magnitude anddirection of the resultant in accordance with this con-struction, following the method already given (130), in-volves considerable labor. A more simple method isgiven in a subsequent article (140). 136.] COMPOSITION OF FORCES. 141 S^ 4 s i fa i X ii JP J^ \ yS* B Ji 135. Forces not in the same Plane. The method offinding the resultant of any number of forces acting ona particle, given in the first paragraph of the precedingarticle, is also applicable when the forces are not in thesame plane. For example, let AB, AC, AD (Fig. 62) representthe three forces P, Q, S respect-ively, acting on the particle at diagonal AE of the parallel-ogram ABEC will represent theresultant of the forces P and Q;also, if the parallelogram AEFDbe constructed, the diagonal AFwill represent the resultant ofAE and AD; that is, of P, Q, andS. The figure thus constructedis
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmechanics, bookyear18
