Replace the two forces by an equivalent resultant force and couple moment at point O. Set F y = 15 lb. 20 lb 30 F 2 in. 6 in. 40 1.5 in. X 5 4 Replace the two wrenches and the force, acting on the pipe assembly, by an equivalent resultant force and couple moment at point O. 100 N. m 300 N A B 100 N 0.5 m 0.6 m -0.8 m 45 200 N 180 N.m