Partial preview of the text
Download Engineering Statics - Solutions for Assignment 15 | ENGR 210 and more Assignments Statistics in PDF only on Docsity!
5-43. The upper portion of the crane boom consists of the jib AB, which is supported by the pin at A, the guy line BC. and the backstay CD, each cable being separately attached to the mast at C. IE the 5-KN load is supported by the hoist line, which passes over the pulley at 2, determine the magnitude of the resultant force the pin cxerts on the jib at A for equilibrium, the tension in the guy line BC, and the tension T in the hoist line, Neglect the weight ot the jib. The pulley at B has a radius of 0.1 m. 5-49. The bopmis intended to support twa vertical loads F, and F,, If the cable CB can sustain a maximum load of 1500 Ib before it fails determine the critical loads if F = 2F, Also, what is the magnitude of the maximum reaction at pin A? From pulley, weasion in the Bost tine is (4B = 0: ‘From the jib, +EM, = 0: +TER =o: Store get ZO 2. TOL) ~ 510.1) = OF Ans Te SKN Tae = 16.4055 = 164 EN Ans 16 ~4, + CSOs Fee) - 520 PI36 (Ey = 0. +TER = 6 i = (DOT = GAA = 1749 b = 1.75 Wb 5-88, ‘The wheelbarrow and its contents have a mass m and center/of mass at G. Determine the greatest angle of tilt without causing the wheelbarrow to tip over. Requike point G to be over the wheel axle for tipping. Thus bcd = «sine e= art? AR (LS c0020") — 52.5 00020") + Fs0) 25 sins + Faso ce.scce30% = 0 R-may Ans a A= 2m = 0D Rs tAsip Ams 4.- fas «0 4, = 1200 A, = 74 ~ 1488 + 201500) = 0 A, > 7 Ans 
