The elevator of a large building is to raise a net mass of
The elevator of a large building is to raise a net mass of 400 kg at a constant speed of 12 m/s using an electric motor. Minimum power rating of the motor should be
(a) 0 kW
(b) 4.8 kW
(c)47 kW
(d) 12 kW
(e) 36 kW
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