What is the mass of a person if he has a potential energy of 5.5 kJ at a height of 10 m?

These tasks: h (the height of the person under consideration above the zero level) = 10 m; Ep (human potential energy) = 5.5 kJ (5.5 * 10 ^ 3 J).

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

We express the mass of the person in question from the formula: En = m * g * h, whence m = En / (g * h).

Let’s calculate: m = 5.5 * 10 ^ 3 / (10 * 10) = 55 kg.

Answer: The person in question has a mass of 55 kilograms.