Elements of mechanics: treated by means of the differential and integral calculus (1887)
Peck, William G[uy], 1820-1892. [from old catalog] · New York, Chicago, A. S. Barnes & company · leaf 49
o the algebraic sum of thecomponent moments with respect to the same axis.Principle of Virtual Moments. 38. Let P represent a force applied to the materialpoint 0; let the point 0 be moved by an extraneous force to some position, pOp JP C, very near to 0; project the path £ Ng 0 0 upon the… … Fig. 18. lively when it falls upon the prolongation of the force, asOp. The product obtained by multiplying any force by itsvirtual velocity is called the virtual moment of the force Assume the figure and nota-tion of Article 36. Op, Oq, andOr are the virtual velocities ofthe forces P, Q, and P.…
Mechanics
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