Power in Mechanics, is the force which, being applied to any body, tends to produce motion, whether it actually produces it or not. In the former case it is called the moving power; in the latter, the sustaining power 'see Horse Power.) The term power is likewise, for the want of a better word, applied to the six mechanical agents (as we prefer to call thorn), namely, lever, pulley, inclined plane, wheel and axle, wedge and screw, - which see: also the article Mechanics.