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An electric motor raises a load of 0.2 kg, at a constant speed, through a vertical distance of 3.0 m in 2 s. If the acceleration of free fall is 10 m/s2, the power in W developed by the motor in raising the load is : (a) 0.3 (b) 1.2 (c) 3.0 (d) 6.0 |
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Answer» An electric motor raises a load of 0.2 kg, at a constant speed, through a vertical distance of 3.0 m in 2 s. If the acceleration of free fall is 10 m/s2, the power in W developed by the motor in raising the load is : (a) 0.3 (b) 1.2 (c) 3.0 (d) 6.0 |
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