Hi, im new. I need someone to help me out with this question, because ive spent the last hour and a half trying to figure this out. I have an exam tomorrow and this question might be asked. Here it is: A man's leg and cast weigh 210 N (center of the mass). The counterbalance weighs 105 N. Determine the weight, w2 and the angle needed so that no force is exerted on the hip joint by the leg plus the cast. There is a diagram showing a man's leg being raised at a 40 degree angle by a wire and pulley on the right, on the end of it is a 105 N weight. On the other side (left), there is another wire pulley with an unknown weight, w2, attached to it at an unknown angle as well. Here is the diagram: http://www.webassign.net/sercp/p4-18alt.gif How do I even begin this question?