A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 445 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5,750 rev/min. (a) Find the kinetic energy stored in the flywheel. J = (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.
A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 445 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5,750 rev/min. (a) Find the kinetic energy stored in the flywheel. J = (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.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter8: Rotational Equilibrium And Dynamics
Section: Chapter Questions
Problem 54P: A car is designed to get its energy from a rotating solid-disk flywheel with a radius of 2.00 m and...
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A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 445 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5,750 rev/min.
(a) Find the kinetic energy stored in the flywheel.
J =
(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 =
J =
(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 =
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