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Q.

A uniform bar AB is placed asymmetrically on two identical wedges P and Q that can slide on a frictionless horizontal tabletop as shown in the figure. Centre of the bar is C. Coefficient of static friction between the bar and the wedges in more than that of kinetic friction. If the wedges are shifted slowly with equal speeds on the tabletop towards each other, what will you observe?

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a

The wedges meet below the centre C.

b

The wedges meet somewhere between the centre C and end B.

c

The wedges always slide relative to the bar until they meet

d

At a time, only one wedge that is farther away from the centre C slides relative to the bar.

answer is A, D.

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