1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution seems like Torque = r f sin theta should be used here but we don't know r. Am I suppose to find the x and y components of the tension of the chain? off topic : if the chain was moved so it would just be above the end of the rod, just like this : , would it put less tension on the chain?