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Question

A uniform bar of mass M and length L collides with a horizontal surface. Before collision, velocity of center of mass was v0 and no angular velocity. Just after collision, velocity of center of mass of bar becomes v in upward direction as shown. Angular velocity ω of the bar just after impact is :
75155.jpg
  1. 6(v0v)cosθL
  2. 6(v0+v)cosθL
  3. (v0+v)cosθL
  4. (v0v)cosθ6L

A
6(v0v)cosθL
B
(v0+v)cosθL
C
6(v0+v)cosθL
D
(v0v)cosθ6L
Solution
Verified by Toppr

Angular momentum will conserve about A just before and
just after collision.

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