A flywheel in the shape of a solid cylinder of radius R=0.60 meter and mass M=15 kilogram can be brought to an angular speed of 12 rad/s in 0.60 second by a motor exerting a constant torque. After the motor is turned off, the flywheel makes 20 revolutions before coming to rest because of frictional forces (assumed to be constant during rotation). Find what percentage of the power generated by the motor is used to overcome the frictional losses?