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Every surface is rough and system is a r...

Every surface is rough and system is a rest chooe correct points

A

Fraction on m is mg upwards

B

Fraction on 2m by wall is 3mg upwards

C

Fraction on 2m is 2mg upwards

D

Fraction on 2m by m is mg downwards

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The correct Answer is:
A, B, C, D
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