Question

an electric motor creates a tension of 4500n in hoisting cable and reels it at the rate of 2m/s what is the power of electric motor

Answer 1

power=work/time
power=force*displacement/time
power=force*displacement/time
power=force*velocity
          =4500N * 2m/s
          =9000W
          = 9 kW

Answer 2

Answer:

*Answer is 9 kilowatts*

Explanation

WORK DONE = product of  FORCE AND DISPLACEMENT.

HENCE= POWER = WORK DONE / TIME

POWER = FORCE * DISPLACEMENT /TIME

## POWER = FORCE  * VELOCITY(SPEED)

POWER = 45000 * 2 ms^-1

POWER = 9000 watts

POWER = 9 kilowatts

hope u understand