A block of mass m rests on truck accelerating at 4 m/s2. Block of mass m is 3m away from end of the truck. If coefficient of friction between block & truck surface is μ=0.1 , the time taken by block to fall off the truck is

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32s

1 S

answer is B.

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Detailed Solution

Srel=Urel t+12arel t23=0t+124−1t2t=2s

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