Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 206
es exerted to a unit ofpounds-feet (see p. 72, Fig. 181), that is, 1 jDound falling 1foot; and the effect to the same unit of pounds-feet, 1 jjoundraised 1 foot. Thus, in the example above, the force exerted or power is 10,000 pounds-feet falling; the effect 10,000 pounds-feet raised. In practice,… … Fig. 370. 190 MECHANICS. The measure of any force, as represented by falling weight, is termed the absolute powerof that force; the resulting force, or useful effect for the purposes for which it is applied,is called the effective power. The Pulley.—The single fixed pulley (Fig. 371) consists of a…
Mechanical drawing
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