The leg and cast in Figure P4.14 weigh 220 N (w1). Determine the weight w2 and the angle a needed so that no force is exerted on the hip joint by the leg plus the cast. My question: ok. what is this question all about. I couldn't understand a diagram. Is the person's leg hanging on the string? Why are there nothing to support the strings. It seems like that the string the flying in the middle of the air. The arrow is not supporting the string is it? This question may seem retarded, but I just couldn't understand the diagram, and thus I cannot solve the problem If you cannot view the attachment, you may click http://students.washington.edu/cy1126/P4.14.jpg"