1. The problem statement, all variables and given/known data Use conservation of energy to determine the angular speed of a spool after the bucket(3.0kg) has fallen 4.00m, starting from rest. 2. Relevant equations KE = 1/2mv^2 KEr = 1/2 * I * omega^2 PE - mgh 3. The attempt at a solution i don't know how to start. I know that i'm suppose to add the change in kinetic translational and kinetic rotational and potential energies. Can someone guide me on this please?