Question

A crane is used to lift 1000 kg of coal from a mine 100 m
deep. The time taken by the crane is 1 hour. The efficiency
of the crane is 80%. If g = 10 ms⁻², then the power of the
crane is
(a) 10⁴ W (b) 10⁵ W
(c) 10⁴/36x8 W (d) 10⁵/36x8 W

Answer 1

Answer:

c.

Explanation:

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