1. The problem statement, all variables and given/known data A car is designed to get its energy from a rotating flywheel with a radius of 1.12 m and a mass of 736 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel’s rotational speed up to 7270 rev/min. Find the kinetic energy stored in the fly-wheel. Answer in units of J. 2. Relevant equations KE = 0.5*Inertia*w^2 Inertia = m*r^2 3. The attempt at a solution convert 7270 rev/min to rad/s = 761.314 rad/s KE equation: 0.5*(761.314)^2*(736 kg)*(1.12m)^2 = 267554029.7 answer is apparently wrong... help please? PART 2, I don't think I can do this without a correct answer from part 1 If the flywheel is to supply energy to the car as would a 11.8 hp motor, how long could the car run before the flywheel would have to be brought back up to speed? Answer in units of h.