1. The problem statement, all variables and given/known data Calculate the work done on a solid cylinder of mass 5.0 kg and radius 55.6 cm by an applied force of 12.2N if it turns 45 degrees. 2. Relevant equations W = torque x angle (radians) 3. The attempt at a solution I just used: W = torque x angle = Force x perpendicular radius x angle = 12.2 x 55.6 x pi/4 Why is this wrong? I think it's wrong, because part b of the question asks how the answer would change if the object was a ring.