Question

Calculate the power rating of a pump if it is to lift 180kg of water per minute through a height of 5.0m assuming 100%.

Answer 1

Answer:

150 W

Explanation:

Mass of water - 180 kg

Let g = 10 m/s²

Height = 5.0 m

Potential energy on lifting the water = mgh = 180 x 5 x 10 J

                                                                        = 9000 J

Time = 1 min = 60 sec.

Power rating of the pump = $\frac{9000}{60} = 150W$