question_answer

A crane is used to lift 1000 kg of coal from a mine 100 m deep. If the time taken by the crane is 1 hr then find the power of the crane, assuming the efficiency of the crane to be 80%. \[\left( \text{g }=\text{9}.\text{8 m}/{{\text{s}}^{\text{2}}} \right)\]

A)  2567 watts

B)  2403 watts

C)  3403 watts  

D)  3761 watts