What horsepower must an electric motor develop to operate a pump that pumps water at a rate of 24 000 liters per hour (L/h) up a vertical distance of 50 m if the efficiency of the pump is 90 percent?...

Extracted text: What horsepower must an electric motor develop to operate a pump that pumps water at a rate of 24 000 liters per hour (L/h) up a vertical distance of 50 m if the efficiency of the pump is 90 percent? The gravitational force on 1 L of water is 9.78 N. % Efficiency = Pout/Pin 24000 L/hr * 9.78N/1L*50m