Question

A ring of mass 2 M and radius 1 R rotates in a CCW direction with...

A ring of mass 2 M and radius 1 R rotates in a CCW direction with initial angular speed 2 ω. A disk of mass 4 M and radius 1 R rotates in a CW direction with initial angular speed 4 ω. The ring and disk "collide" and eventually rotate together. Assume that positive angular momentum and angular velocity values correspond to rotation in the CCW direction.

What are the moments of inertia for the ring and disk? Write your answer in terms of MR2.
Iring =  M R2
Idisk =  M R2

Remember that I = beta*MR2.
Incorrect. Tries 1/2 Previous Tries


What is the initial angular momentum for the ring? Write your answer in terms of MR2ω.
MR2ω

Tries 0/2


What is the initial angular momentum for the disk?
MR2ω

Tries 0/2


What is the initial angular momentum Li(ring+disk) of the system?
MR2ω

Tries 0/2


What is the final angular velocity ωf of the ring+disk system? Write your answer in terms of ω.
ω

0 0
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