Question

1000 kg of water falls every second from a height of 120 m. The energy of
this falling water is used to generate electricity: Calculate the power of the
generator assuming no losses.​

Answer 1

E = mgh

= 1000×10 ×120

= 1200000

1.2 ×10^6 joule

Power = E/t =

t=1 sec.

Power = 1.2 ×10^6 joule/1 sec

= 1.2 ×10^6 watt.

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