Physics (AS & A Level) · May / June 2026 · Paper 12 · Question 17

An object of weight 3.0 N is moved vertically at a constant velocity v by an electric motor. The electric motor has an efficiency of 25%. The object travels a vertical distance of 1.2 m in 3.0 s. Assume that the useful output energy of the motor is equal to the increase in gravitational potential energy of the object. What is the electric power supplied to the motor?

1. A0.3 W
2. B1.2 W
3. C4.8 W
4. D30 W

As printed in the paper