1. The problem statement, all variables and given/known data A 1.53-kg mass hangs on a rope wrapped around a frictionless disk pulley of mass 7.07 kg and radius 66.0 cm. What is the acceleration of the mass? I know this has been posted before but I learn better when I try to solve things on my own. 2. Relevant equations F = ma T = Iα 3. The attempt at a solution Forces acting on mass: unknown acceleration and torque from pulley Forces acting on disk : Gravity So there are two forces pointing down (gravity on the mass and disk) and one pointing up (torque). (1.53 kg)(unknown acceleration) + (7.07 kg) (9.8 m/s^2) = 1/2 (0.66 m)^2 (7.07 kg) Does this make sense? I want to ensure I've labeled forces correctly.