A person puts pressure on the floor, equal to 15 kPa. The total area of the soles of his boots is 0.04 m ^ 2

A person puts pressure on the floor, equal to 15 kPa. The total area of the soles of his boots is 0.04 m ^ 2. What is the mass of a person?

Initial data: P (value of pressure that a person exerts on the floor) = 15 kPa = 15 * 10 ^ 3 Pa; Stot (total area of the soles of a person’s shoes) = 0.04 m2.

Reference values: g (acceleration due to gravity) = 9.81 m / s2 ≈ 10 m / s2.

The mass of a person is determined from the formula for calculating pressure: P = Ft / Stot = m * g / Stot, whence m = P * Stot / g.

Let’s calculate: m = 15 * 10 ^ 3 * 0.04 / 10 = 60 kg.

Answer: The mass of a person is 60 kilograms.