Mechanics of engineering. Comprising statics and dynamics of solids: and the mechanics of the materials of constructions, or strength and elasticity of beams, columns, arches, shafts, etc (1888)
Church, Irving P[orter], 1851- [from old catalog] · New York, J. Wiley & sons · leaf 148
and necessity. Power is the rate at which work is done, and one of itsunits is one foot-pound per second in English practice ; a largerone will be mentioned presently. The power exerted by a working force, or expended upon aresistance, may be expressed symbolically as L = P1s1 -r- t, or i?ss3 ^ t,… … WORK, ENERGY, AND POWER. 135 131. Example.—Fig. 145, shows as a free body a sledgewhich is being drawn uniformly up N ^%*p^ a rough inclined plane by a cordparallel to the plane. Required thetotal power exerted (and expended),if the tension in the cord is Px — 100lbs., the weight of sledge i?3 =…
Mechanics, Applied · Engineering · Strength of materials
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