A smooth sphere A is moving on a frictionless horizontal plane with angular speed 
and center of mass with velocity 
. It collides elastically and head-on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angular speeds are 
and 
respectively. Then
A
< 
B
= 
C
= 
D
= 
Text Solution
Verified by ExpertsThe correct answer is:
C
Since the spheres are smooth, there will be no transfer of angular momentum from the sphere A to sphere B. The sphere A only transfers its linear velocity v to the sphere B and will continue to rotate with the same angular speed 
.
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