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A sphere of mass m and radius r rolls wi...

A sphere of mass `m` and radius `r` rolls without slipping on the horizontal surface with speed `v`. During its motion it encounters a fixed rectangular block of height `h=(r )/(4)` as shown. The collision is inelastic. Find the angular speed of sphere immediately after collision. The body rolls without slipping.

A

zero

B

2rad/sec

C

2.5 rad/sec

D

3rad/sec

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