Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 91
the moment is F -1 sin a = F sin a • I, which shows that in discussing moments it is only necessaryto consider the componentof F, which is at rightangles to I. 55. Resultant of TwoParallel Forces. — Let F1 and F2 (Fig. 53) be twoparallel forces applied toa rigid body in the direc-tion of the lines… … Fig. 53. 8 ■ RESULTANT OF TWO PARALLEL FORCES. 81 given point perpendicular to the direction of the forces.Let OA=pv OB=p2, 00=p, and call the resultant R.Then in order that the rotating effect of R shall be thesame as the combined effect of the forces, (3) Rp = FiPi+F2PvBut, by definition, (4) R =…
Physics
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