Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 81
W\The force represented by bh is therefore0.436 X 50 lbs. =21,8 lbs.(3) A mass of 20 lbs. is suspended fromthe point p (Fig. 47), where a string is bentat a right angle. The ends of the stringare fastened to two nails , i^i and i\T2twhich are at the same height. The partATi^ is 4 ft. long, the part… … THE PARALLELOGRAM OF FORCES. 69 The triangle pqW is equal to the triangle Wrp and similar to thetriangle N*pNi. The side N^N* = V& _j_ 42 = 8.94 ft. nearly. The pull on i\^ is represented by pq, and we have pq : p W : : N& : JMfi, or pg = (8 ■*- 8.94) X p IT. Therefore pq represents very…
Physics
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