Physics-
General
Easy
Question
Imagine a situation in which the horizontal surface of block M0 is smooth, and its vertical surface is rough with a coefficient of friction 
. Consider a special situation in which both the faces of the block M0 are smooth, as shown in adjoining figure. Mark out the correct statement(s)
- If F = 0, the blocks cannot remain stationary
- For one unique value of F, the blocks M and m remain stationary with respect to block M0
- There exists a range of F for which blocks M and m remain stationary with respect to block M0
- Since there is no friction, therefore, blocks M and m cannot be in equilibrium with respect to M0
The correct answer is: If F = 0, the blocks cannot remain stationary
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