The boy's modern playmate : a book of sports, games, and pastimes (1890)
Wood, J. G. (John George), 1827-1889, compiler, editor, Dalziel, George, 1815-1902, engraver, Dalziel, Edward, 1817-1905, engraver · London ; New York : Frederick Warne & Co. · leaf 651
s the power, P, acting upwards, these two tensions would support a weight of 2 P, therefore w must be equal to 2 P. Perhaps it will make it still clearer if you hold the end, R, also with the hand. Then it must be quite evident that the weight is supported by two forces acting upwards, each equal… … Fig. 41. Fig. 40. Fig. 39. There are three systems of arranging pulleys, or reeving them, as it is called. In the first system, which is shown in Fig. 39, each pulley hangs by a separate string, and all the strings are parallel. When three movable pulleys are arranged thus, the weight is equal to…
Games · Amusements · Sports · Recreation · Pets
Internet Archive · Harold B. Lee Library · Public domain (published before 1931). Free to use for anything.
