A car is designed to get its energy from a rotating flywheel with a radius of 1.00 m and a mass of 580 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4,250 rev/min. (a) Find the kinetic energy stored in the flywheel. (b) If the flywheel is to supply energy to the car as a 15.0-hp motor would, find the length of time the car could run before the flywheel would have to be brought back up to speed. h

A car is designed to get its energy from a rotating flywheel with a radius of 1.00 m and a mass of 580 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4,250 rev/min. (a) Find the kinetic energy stored in the flywheel. (b) If the flywheel is to supply energy to the car as a 15.0-hp motor would, find the length of time the car could run before the flywheel would have to be brought back up to speed. h

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter13: Rotation Ii: A Conservation Approach

Section: Chapter Questions

Problem 30PQ

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