A block can slide on a smooth inclined p...

A block can slide on a smooth inclined plane of inclination `theta` kept on the floor of a lift. When the lift is descending with a retardation a , the acceleration of the block relative to the incline is

`g sin theta`

`a sin theta`

`(g-a) sin theta`

`(g+a) sin theta`

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The correct Answer is:

( c) If lift is accelerating, reading will be more, if it is decelerating reading will be less and if it is moving with constant velocity reading will be same.

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