Question

The power of a pump, which can pump 500 kg of
water to height 100 m in 10 s is
(1) 75 kW
(2) 25 kW
(3) 50 kW
(4) 500 kW​

Answer 1

Answer:

5*10^4w= 50kw

Explanation:

=>W = mgh + mv^2/2

=>kinetic energy = 0

so

• given

=>W = mgh

=>m = 500kg

=>g = 10m/s^2

=>h = 100m

=>t = 10s

=>Work = 500*10*100= 5*10^5

=>Power = w/t

=>power = 5*10^5/10= 5*10^4w

• since

=>1kw = 10^3w

so

=>5*10^5w = 50kw

so

=>power= 50kw

Answer 2

Answer:

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