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A ball of mass `m` moving with velocity `v`, collide with the wall elastically as shown in the figure. After impact the change in angular momentum about `P` is :
image.
A. `2 mvd`
B. `2 mvd cos theta`
C. `2 mvd sin theta`
D. zero

1 Answer

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Best answer
Correct Answer - B
`J_(i) = mvdcos theta`
`J_(f) = -mvdcos theta`
`Delta_(j) = -2 mvd cos theta`.
image.

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