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A block of mass m is kept on an inclined...

A block of mass `m` is kept on an inclined plane of mass `2m` and inclination `alpha` to horizontal. If the whole system is accelerated such that the block does not slip on the wedge then :

A

The normal reaction acting on `2m` due to `m` is `mg sec theta`

B

For the block `m` to remain at rest with respect to wedge a force `F = 3mg tan alpha` must be applied on `2m`

C

The normal reaction acting on `2m` due to `m` is `mg sec theta`

D

Pseudo force acting on `m` with respect to ground is `mg tan alpha` towards west.

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The correct Answer is:
a,b,c
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