1. The problem statement: In the diagram (which I attached) a 50 kg square (2m on each side) is hung on a horizontal rod which is 3m long (of neglibible mass). A cable is attached to the end of rod and to a point on the wall 4m above the point where the hinged sign is. A. What is the Tension in the cable? B. What are the magnitudes and directions of the horizontal AND vertical components of force on the rod from the wall? 2. Relevant equations -Confusion ?? 3. The attempt at a solution We know that the sign is in equilibrium. So to find the tension in the cable I thought that the y component of the tension would be equal to the weight of the sign. But this is wrong. Why? Do I need to use torque ? I have about 10 of these problems to do tonight so if I understood it, I'd be VERY thankful. Please help!