a bus contains a 1740 kg wheel (a disk that has a .56 m radius) and has a total mass of 9600 kg. Calculate the angular velocity the flywheel must have to contain enough energy to take the bus from rest to a speed of 20 m/s, assuming 90% of the rotational kinetic energy can be transformed into translational energy.
How high can the bus climb with this stored energy and still have a speed of 3.10 m/s at the top of the hill?