Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1903)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & sons; [etc., etc.] · leaf 68
5 tons. or 6.37 tons. 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 ^^Cis con-sidered without weight, and from the nature of the modeof support of the door receives horizontal… … A \\ I !o =l6 lbs.G tc Fig. 70. Fig. 70 shows the door free, and, bj moments about 0\ usingthe pound and foot, 6^a = ^^; or ^ = (200 X 1.5) -f- 5 = 60 lbs. -2 (vert, comps.) givesC =G= 200 lbs.; while from 2 (hor. compons.), — A-\- C = 0, whenceC = A^m lbs. Tbe rod as a free body is shown in Fig.…
