A bus contains a 2,353 kg flywheel (a disk that has a 1.9 m radius) and has a total mass of 10,641 kg. Assume 90.0% of the rotational kinetic energy of the flywheel can be transformed into translational energy of the bus. what is the angular velocity in unit of round per minute the flywheel must have to contain enough energy to take the bus from rest to climb a hill of height 16.7 meters and still have a speed of 9 m/s at the top of the hill? Use g = 10 m/s2.
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