Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1897)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & Sons · leaf 68
1I I ^ic ! r Fig. 68. 58. Example 7 Door and Long Hinge-rod.—The door weighs200 lbs., and is supported in a vertical plane in the mannerindicated in Fig. 69. The continuous vertical rod ^^6is con-sidered without weight, and from the nature of the modeof support of the door receives horizontal… … ^ li I I II X 200Jbs. tc Fig. 70. Fig. 70 shows the door free, and, by moments about 0\ usingthe pound and foot, Ga =^ Ah, or A = (200 X 1.5) -6 = 60 lbs. 2 (vert, comps.) givesC =G = 200 lbs.; while from 2 (hor. compons.), — A-{- C =^0, whenceC = A = m lbs. The rod as a free body is shown in Fig.…
