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

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

(A) 15 KW

(B) 9 KW

(C) 225 W

(D) 9000 H.P

Solution :  P = T.v (numerically)

P = 4500 × 2

= 9000 W = 9 kw