Question

11 A motor is used to lift a load of 40N

motor

load lifted

through 0. 50 m

load

40N

The power of the motor is 40 W and the system is 20% efficient

How long does it take the motor to lift the load through 0. 50m?

А

0. 50 $

B 255

C 50s

D 25 s

Answer 1

C. The power of the motor is 40 W and the system is 20% efficient, so the time it takes for the motor to lift the load through 0.50 meters can be calculated using the following equation:

Time = (Load x Distance) / (Efficiency x Power)

Time = (40 N x 0.50 m) / (0.20 x 40 W)

Time = 50 seconds.