Question text
12 A motor is used to lift a load 0.50m vertically, as shown. motor 0.50 m load 40 N The load weighs 40N. The power of the motor is 20W and the system is 25% efficient. How long does it take to raise the load? A 0.040s B 0.25s C 4.0s D 40s
12 A motor is used to lift a load 0.50m vertically, as shown.
motor
0.50 m
load
40 N
The load weighs 40N. The power of the motor is 20W and the system is 25% efficient.
How long does it take to raise the load?
A 0.040s B 0.25s C 4.0s D 40s
Select your answer: