Physics (AS & A Level) · May / June 2026 · Paper 13 · Question 15

An object shaped as a hemisphere rests with its flat surface on a table. The object has radius r and density ρ. The volume of a sphere is $\frac{4}{3}\pi r^3$. What is the average pressure that the object exerts on the table?

1. A$\frac{1}{3}\rho r^2$
2. B$\frac{1}{3}\rho r^2 g$
3. C$\frac{2}{3}\rho r$
4. D$\frac{2}{3}\rho r g$

As printed in the paper