A hiker is standing on fresh snow wearing snowshoes. The hiker has a mass of 70 kg70\text{ kg}70 kg. (Take g=10 N/kgg = 10\text{ N/kg}g=10 N/kg)
Calculate the downward force (weight) of his body acting on the snow.
Force=............................ N \text{Force} = \text{............................ N} Force=............................ NThe total area of both his snowshoes in contact with the snow is 0.25 m20.25\text{ m}^20.25 m2.
Calculate the pressure the hiker exerts on the snow.
Pressure=............................ N/m2 \text{Pressure} = \text{............................ N/m}^2 Pressure=............................ N/m2The hiker lifts one foot off the snow. The other snowshoe sinks further into the snow.
Explain why this happens. A calculation is not required.
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.