Two blocks of masses m and M placed one over the other, are being pulled by a time-dependent force F=k t as shown in the figure. The ground is smooth but coefficient of static friction between the blocks is μ. #x27;The tine till both the blocks move together is (a) μg k/(m |M) (b) 2 μg k/(m |M) (c) μg(m+M)/k
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