1. The problem statement, all variables and given/known data Lets say I have a the generic pulley setup with no friction http://img.sparknotes.com/content/testprep/bookimgs/sat2/physics/0014/tablewpulleyFBD.gif How would I calculate the Torque on the pulley? 2. Relevant equations Torque = Force times Radius 3. The attempt at a solution Would the torque simply be the torque caused by gravity of the free hanging weight or do I have to take the force of tension into account?