A hand book of general instruction for mechanics, containing useful rules and memoranda for practical men (1907)
Smith, Franklin Elijah, 1872- · New York, D. Van Nostrand company · leaf 291
Fig. 89 The radius D, F, of the wheel will be the leverage of theforce applied,or power,and the radius E, D, of the axle theleverage of the weight. 278 A HAND BOOK FOR MECHANICS From this, then, we may deduce the following rules:To find the power: multiply the weight by the radiusof the axle and… … Fig. 90Radius of axle == 3 inches; radius of wheel = 6 inches. Ans. 3 X 300 900 , Kn = = 150. 6 6 That is, a pressure of 150 pounds at R will balance aweight of 300 at K. To find the weight: Multiply the power by the radiusof the wheel and divide by the radius of the axle. THE SIMPLE MACHINES 279…
Mechanics · Arithmetic · Measurement
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