"The leg and cast in the figure below weigh 300 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1...

"The leg and cast in the figure below weigh 300 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 150 N. Determine the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast"