Question

You're driving a hybrid experimental vehicle, designed to drive in congested traffic. In a car with conventional brakes every time you stop to stop, the kinetic energy is dissipated as heat. In this hybrid vehicle, the braking mechanism transforms the kinetic energy of translational movement of the vehicle in the rotational kinetic energy of a flywheel mass. As the car back to run, this energy is converted back into kinetic energy of translation of the car. The wheel has 100 kg is a hollow cylinder of radius 25 cm and interoperable outer radius of 40 cm, and reaches a maximum angular speed 30