Mechanics of engineering (solids) : comprising statics and kinetics of solids, and the mechanics of the materials of construction, or strength and elasticity of beams, columns, shafts, arches, etc. : for use in technical schools (1911)
Church, Irving P. (Irving Porter), 1851-1931 · New York : Wiley ; London : Chapman & Hall · leaf 165
should have (§ 64), for a small motion parallel to theplane of the forces, 2{Pdu) = 0, i.e., S{Pdu) for A - 2{Fdu) for £ = 0, or -f 2{Pdu) for A ^-{- 2{Pdu) for P. But -(- 2 {Pdu) for A is the aggregate work done by the forcesof A during the given motion, and -\- 2{Pdu) for ^ is asimilar quantity… … 141. Relation of Work and Kinetic Energy for any ExtendedMotion of a Rigid Body Parallel to a Plane.—(If at any instant any of the forces acting are notparallel to tlie plane mentioned,their components lying in orparallel to that plane, will be usedinstead, since the other compo-nents obviously…
Mechanics, Applied · Strength of materials
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