Any help on thinking about this general scenario involving string tension? 1. The problem statement, all variables and given/known data Two rods A and B are connected by a joint (A, B are different lengths. Also this is a planar problem). The ends of the rods are connected by a string so the system is a triangle. A constant torque is applied between the rods at their joint. What's the tension (force) in the string? Tension can be found by calculating forces at either end since it should be identical, but they don't match for me. Visually the vector component breakdown doesn't look correct either. 2. Relevant equations perpendicular force F at end of rod A = half of torque / length = (T/2) / lengthA perpendicular force F at end of rod B = half of torque / length = (T/2) / lengthB 3. The attempt at a solution Here are extreme cases first. If the rods are the same length, and they're folded on top of each other, so the string is almost zero length, the tension will be just the normal forces (from the torque) at the rod ends. If the rods are swung out almost completely in line--and the string is slightly shorter so they can't swing out straight all the way--then the tension will be near infinite regardless of the torque, right? Or does it become very small? If it becomes very small then my answers are the same for both ends of the string, but intuitively it doesn't make sense when drawing a vector diagram of the forces. If it goes to infinity, it makes sense in the vector diagram, but the answers are different for each end.