Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of the input energy. How much power is generated by the turbine?

(g = 10 m/s^{2})

(1) 7.0 kW

(2) 10.2 kW

(3) 8.1 kW

(4) 12.3 kW