1. The problem statement, all variables and given/known data Part One: A flywheel in the form of a heavy circular disk of diameter 0.725 m and mass 127 kg is mounted on a frictionless bearing. A motor connected to the flywheel accelerates it from rest to 1340 rev/min. What is the moment of inertia of the flywheel? Answer in units of kg times meters squared. Part Two: How much work is done on it during this acceleration? Part Three: After 1340 rev/min is achieved, the motor is disengaged. A friction brake is used to slow the rotational rate to 973 rev/min. What is the magnitude of the energy dissipated as heat from the friction brake? Answer in units of J. 2. Relevant equations Honestly, I have no idea where to even begin! I know that torque = rFsin(theta) = I(angular acceleration), but this does not seem to generate a reasonable answer. I'm in an algebra-based physics class, so there must be SOME algebraic equation that can help me out? Any tips in the right direction are extremely helpful, thanks!