Question

if a man lifts a load up with the help of a rope such that it raise the load of mass 50kg to a height of 20 m in 100 sec .find the power of man​

Answer 1

Answer:

Answer:7.power is 100Wattspower =work done / time takenwork done =mass ×gravitational acceleration

Answer 2

A 750 W motor drives a pump which lifts 300 litre of water per minute to a height of 6 meter. The efficiency of the motor is nearly (take acceleration due to gravity to be 10 m/s

2

and density of water ρ=1000 kg/m

3

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