Consider the situation shown in the figu...

Consider the situation shown in the figure. The wall is smooth but the surfaces of A and B in contact are rough. Then,

system may remain in equilibrium

both bodies must move together

the system cannot remain in equilibrium

None of the above

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The correct Answer is:

From the diagram shown in figure, the resultant force of B in vertical direction is not zero. Hence, the system never be in equilibrium.

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