An electric motor creates a tension of 4500 newton in a hoisting cable and reels it in at the rate of 2 m/s. What is power of electric motor?

Q: An electric motor creates a tension of 4500 newton in a hoisting cable and reels it in at the rate of 2 m/s. What is power of electric motor?

(a) 15 kW

(b) 9 kW

(c) 225 Watts

(d) 9000 H.P

Ans: (b)