Hale, Joseph W. L. (Joseph Woodwell Ledwidge), 1886- · New York [etc.] McGraw-Hill book company · leaf 55
rum Fig. 54. … Fig 55. CALCULATION OF LEVERS 41 a force of 40 lb. is exerted at ^^F/ we find the resistance of thenail at the start by calculating a first-class lever, whose arms arebent up at right angles to each other. If the distance s = 2 in.and S = 9 in., calculate the resistance R of the nail at thestart.…
Mechanics, Applied
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