Find the power of an electric motor, if it lifts 200 kg of water in 5 minutes from a well of 120 m depth.

Find the power of an electric motor, if it lifts 200 kg of water in 5

1.	Find the power of an electric motor, if it lifts 200 kg of water in 5 minutes from a well of 120 m depth.
Answer» Solution :MASS of water m = 200 KG Depth of well =HEIGHT lifted = 120 m Time `t = 5 XX 60` sec = 300 sec `power = ("Work done against gravitational force")/("time")` power = `(mgh)/(t)=(200xx9.8xx120)/(5xx60)=784W.`