The four camping chair feet have the following bases, as seen from underneath and drawn to the same scale: Foot A (a medium-sized equilateral triangle), Foot B (a large square), Foot C (a very small circle), and Foot D (a medium-sized rectangle).
Which chair foot is most likely to sink into soft ground?
Foot A
Foot B
Foot C
Foot D
188 exam-style questions on CIE IGCSE Physics Pressure, covering Pressure. Each one has a worked solution and a mark scheme showing where the marks go.