Answer:
720 W
Explanation:
First let us find the work done of lifting the elevator. The work done can be calculated using the formula WD = F × d where F is the magnitude of force in N and d is the parallel distance moved in m. Hence,
WD = (1200)(9)
= 10 800 J
Power is the rate of work done with the formula P = E/t where E is the work done in J and t is the time in s. Hence,
Power of motor = 10 800/ 15
= 720 W
