An excavator is fitted with wide tracks instead of narrow wheels to prevent it from sinking into soft mud. How do the wide tracks change the area of contact with the ground and the pressure exerted on it?
Area of contact: decreased; Pressure: decreased
Area of contact: decreased; Pressure: increased
Area of contact: increased; Pressure: decreased
Area of contact: increased; Pressure: increased
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.