A light rod AD is supported by frictionless pegs at B and C and rests against a frictionless wall at A. A vertical 120-lb force is applied at D. Determine the reactions at A, B, and C. (Check all correct answers) * 8 in. D 8 in. 120 lb 8 in. 30°

Problem 2 A 1.5-kN crate is suspended by the cable system as shown below. Determine the tension developed in each cable for equilibrium. A 3m Begin your solution here

1. For the frame shown, determine the reaction at E assuming a pinned support. The tension in the cable is 150 kN. 2.25 m A B 3.75 m 20 kN 20 kN 20 kN 20 kN 1.8 m 1.8 m 1.8 m 1.8 m E F 4.5 m

2. A 200-mm lever and a 240-mm pulley are welded to the axel BE that is supported by bearings at C and D. Assume that the bearing at D does not exert any axial thrust. A 720-N vertical force is applied at A when the lever is horizontal. Determine (a) the tension, T, in the cord, and (b) the reactions at C and D. Ans: T = 1200N, C = 400î +1200 N, D=-1600î – 480ĵ N %3D 40 mm 80 mm 120 mm 200 mm D E 120 mm 720 N