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CLASS XI

Physics >> WORK ENERGY POWER
1.
Two masses ‘m’ and ‘2m’ are connected by a massless string which passes over a light frictionless pulley as shown in fig.1. The masses are initially held with equal lengths of the strings on either side of the pulley. Find the velocity of the masses at the instant the lighter mass moves up a distance of 6.54 m. The string is suddenly cut at that instant. Calculate the time taken by each to reach the ground. (g = 9.81 m/s2)
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