A heavy storage rack has four feet. The area of contact of each foot with the floor is AAA.
The feet of the rack make indentations in a soft rubber floor mat. These indentations become deeper with increased pressure.
What would reduce the depth of the indentations for a rack of a fixed weight?
using three feet, each of an area smaller than AAA
using three feet, each of an area the same as AAA
using four feet, each of an area smaller than AAA
using five feet, each of an area the same as AAA
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.