A bus contains a 1500 kg flywheel (with a disk of .600 m radius) and total

A bus contains a 1500 kg flywheel (with a disk of .600 m radius) and total mass of 10,000 kga) Calculate angular velocity the flywheel must have to contain enough energy to take the bus from to a speed of 20 m/s, assuming 90% of rotational kinetic energy can be transformed into translational energyb) how high a hill can the bus climb with this stored energy and still have a speed of 3 m/s at the top of the hill?

 

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