A ring (mass M) and disk (mass M) with radii R rotate in opposite directions. The ring rotates Clockwise with an angular speed 3ω, and the disk rotates Counterclockwise with a speed 2ω The ring and the disk then "collide" and rotate together with the same ωf. What is the initial angular momentum of the ring. Remember, if the angular momentum is pointing down, it is negative, if it is pointing up it is positve. -3 MR2ω What is the initial angular momentum of the disk? Remember, if the angular momentum is pointing down, it is negative, if it is pointing up it is positve. What is the total angular momentum of the disk and ring together?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 81P: A projectile of mass m moves to the right with a speed vi (Fig. P10.81a). The projectile strikes and...
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A ring (mass M) and disk (mass M) with radii R rotate in opposite directions.

The ring rotates Clockwise with an angular speed , and the disk rotates Counterclockwise with a speed 

The ring and the disk then "collide" and rotate together with the same ωf. What is the initial angular momentum of the ring. Remember, if the angular momentum is pointing down, it is negative, if it is pointing up it is positve.
-3 MR2ω

What is the initial angular momentum of the disk? Remember, if the angular momentum is pointing down, it is negative, if it is pointing up it is positve.

What is the total angular momentum of the disk and ring together?

What is the Moment of Inertia of the ring plus disk?

What is the Angular velocity, ω of the ring plus disk after the collision?

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A ring (mass M) and disk (mass M) with radii R rotate in opposite directions.

The ring rotates Clockwise with an angular speed , and the disk rotates Counterclockwise with a speed 

The ring and the disk then "collide" and rotate together with the same ωf.

What is the Moment of Inertia of the ring plus disk?

What is the Angular velocity, ω of the ring plus disk after the collision?

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