Wheel A has three times the moment of inertia about its axis of rotation as wheel B. Wheel B's angular speed is four times that of wheel A. If KA and KB are the rotational kinetic energies of the wheels, what is KA/KB? Express your answer using four significant figures.

Wheel A has three times the moment of inertia about its axis of rotation as wheel B. Wheel B's angular speed is four times that of wheel A. If KA and KB are the rotational kinetic energies of the wheels, what is KA/KB? Express your answer using four significant figures.

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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Question

Wheel A has three times the moment of inertia about its axis of rotation as wheel B. Wheel B's angular speed is four times that of wheel A.

If KA and KB are the rotational kinetic energies of the wheels, what is KA/KB?

Express your answer using four significant figures.

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