Pressure: the Same Force Over a Different Area

Pressure is p = F/A, measured in pascals, where one pascal is one newton spread over one square metre. A 600 N student standing on shoes of total area 0.03 m² exerts 20,000 Pa; the same student on snowshoes of 0.3 m² exerts 2,000 Pa and stays on top of the crust. The force never changed — only the area it was spread over — and the pressure fell by exactly the factor the area rose. That inverse relationship is why a drawing pin has a wide head and a sharp point on the same shaft.