Rotational kinetic energy
Flywheel energy for car The U.S. Department of Energy had plans for a 1500-kg automobile to be powered completely by the rotational kinetic energy of a flywheel. (a) If the 300-kg flywheel (included in the 1500-kg mass of the automobile) had a 6.0-kg . m2 rotational inertia and could turn at a maximum rotational speed of 3600 rad/s, determine the energy stored in the flywheel. (b) How many accelerations from a speed of zero to 15 m/s could the car make before the flywheel’s energy was dissipated, assuming 100% energy transfer and no flywheel regeneration during braking?
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