Physics (AS & A Level) · May / June 2023 · Paper 13 · Question 15

An airport has a mechanical system for moving luggage. The system uses a horizontal conveyor belt, a sloping conveyor belt, a lift and a frictionless slide. A suitcase is moved around the airport using this system. Resistive forces opposing the motion of the suitcase are negligible. For which movement of the suitcase is the net work done on the suitcase greatest?

1. Amoving the suitcase a distance of 8 m at a constant speed up the sloping conveyor belt
2. Bmoving the suitcase a distance of 16 m at a constant speed along the horizontal conveyor belt
3. Cmoving the suitcase a distance of 10 m at a constant speed vertically upwards on the lift
4. Dmoving the suitcase a distance of 12 m at increasing speed downwards on the slide

As printed in the paper