A block A is made to move up an inclined...

A block A is made to move up an inclined plane of inclination`theta` with constant acceleration `a_(0)` as shown in figure. Bob B, hanging from block A by a light inextensible string, is held vertical and is moving along with the block. Calculate the magnitude of acceleration of block A relative to the bob immediately after bob is released.

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The correct Answer is:

`a_(0) "cos"theta`

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