The angular velocity omega has units of rad/s   Rotational kinetic energy has different units than translational kinetic energy.   Moment of Inertia has units of kg m2   If the center of mass of an object does not move, its kinetic energy must be zero.   Kinetic energy of rotation depends on the direction of rotation.   If they have the same mass and radius, a ring would have a larger moment of inertia about its center than a disc.

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 32PQ
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Which of the following statements are true?

Select all correct.

 

Question 9 options:

 

The angular velocity omega has units of rad/s

 

Rotational kinetic energy has different units than translational kinetic energy.

 

Moment of Inertia has units of kg m2

 

If the center of mass of an object does not move, its kinetic energy must be zero.

 

Kinetic energy of rotation depends on the direction of rotation.

 

If they have the same mass and radius, a ring would have a larger moment of inertia about its center than a disc.

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