Physics · Oct / Nov 2018 · Paper 12 · Question 12

A motor is used to lift a load 0.50 m vertically, as shown. The load weighs 40 N. The power of the motor is 20 W and the system is 25% efficient. How long does it take to raise the load?

1. A0.040 s
2. B0.25 s
3. C4.0 s
4. D40 s

As printed in the paper