Question

A 70 kg person walks on snow with a total foot imprint area of 500 cm². What pressure does he exert on snow?
1. 0.5 kPa
2. 12.5 kPa
3. 13.73 kN/m²
4. 137.3 kN/m²

Answer 1

Correct Answer - Option 3 : 13.73 kN/m²

\(\begin{array}{l} Pressure = \frac{{Force}}{{Projected\;Area}}\\ = \frac{{70 \times 9.81}}{{500 \times {{10}^{ - 4}}}}\frac{N}{{{m^2}}} \end{array}\) 

∴ P = 13734 N/m² or 13.73 kN/m²