1.

An elevator can carry a maximum load of 2000 kg, is moving with a constant velocity 1 m/s.The frictional force opposing the motion is 5000 N. Then minimum power required to workthe motor used in elevator is ................. (g = 10 m/s)[a] 15 kW[c] 20 kW [A25 kWmy 2005[b] 5 kW

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