Physics (AS & A Level) · Feb / March 2025 · Paper 12 · Question 13

The diagram shows a uniform plank XY of length 4.0 m and weight 300 N. The plank rests on fixed supports at its ends X and Y. A child of weight 600 N stands in different positions on the plank. The support at end X exerts a force F vertically upwards on the plank. What is the magnitude of F when the child stands at X and when the child stands at Y?

1. A600, 0
2. B600, 150
3. C750, 0
4. D750, 150

As printed in the paper