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Consider a sphere of mass 'm' radius 'R'...

Consider a sphere of mass 'm' radius 'R' doing pure rolling motion on a rough surface having velocity `vec(v)_(0)` as shown in the figure. It makes an elastic impact with the smooth wall and moves back and starts rolling after some time again.

A

Change in angular momentum about 'O' in the entire motion equals `2 mv_(0)` R in magnitude

B

Moment of impulse provided by walll during impact about O equals `2mv_(0) R ` in magnitude

C

final velocity of ball will be `(3)/(7)vec(v)_(0)`

D

Final velocity of ball will be `-(3)/(7) vec(v)_(0)`

Text Solution

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The correct Answer is:
A, B, D
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