Question

1) An electric crane was designed to lift a load of 20kg through a distance of 5m. If the time taken for the work to be done was 10 seconds, calculate the power used by the crane
2) Calculate the work done when a body of mass 50kg moves through a distance of 5m
3) Calculate the power expended by a boy lifting a load of 20 kg through a height of 6 m for 30 seconds
( Take g = 10 m/s² )

Answer 1

Answer:

5.500 gm

Explanation:

the answer is suppose 10 kg in 5 min to every 2 kg for 1 min then20 kg =30 sec then in 10 sec then every 10 sec in 5.500

Answer 2

Answer:

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