# Kinetic energy and rotational speed of a flywheel in a car

A car is designed to get its energy from a rotating flywheel with a radius of 2.20 m and a mass of 499 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5120 revolutions per minute. Find the kinetic energy stored in the flywheel.

Â© BrainMass Inc. brainmass.com February 24, 2021, 2:16 pm ad1c9bdddfhttps://brainmass.com/physics/energy/kinetic-energy-and-rotational-speed-of-a-flywheel-in-a-car-11204

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The solution explains the problem and the calculations to arrive at the answer.

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