The area of the soles of shoes for a person weighing 80 kg is 60 cm2. What pressure does it exert on the Earth?

Initial data: m (mass of the considered person) = 80 kg; S (shoe soles area) = 60 cm2 (SI S = 60 * 10-4 m2).

Reference values: g (acceleration due to gravity) = 9.81 m / s2.

The pressure that the person in question must exert on the ground is determined by the formula: P = F / S = m * g / S.

Let’s perform the calculation: P = 80 * 9.81 / (60 * 10 ^ -4) = 130.8 * 10 ^ 3 Pa = 130.8 kPa.

Answer: The person in question exerts a pressure of 130.8 kPa on the ground.