At a height of 10m, the potential energy is 350 kJ, find the body mass.

To find out the mass of the conditional body under consideration, we apply the formula: Ер = mх * g * h, from where we express: mх = Ер / (g * h).

Const: g – acceleration due to gravity (g ≈ 10 m / s2).

Data: Ер – potential energy of the considered conventional body (Ер = 350 kJ = 3.5 * 10 ^ 5 J); h – height (h = 10 m).

Let’s perform the calculation: mx = Ep / (g * h) = 3.5 * 10 ^ 5 / (10 * 10) = 3.5 * 10 ^ 3 kg or 3.5 tons.

Answer: The conditional body under consideration must have a mass of 3.5 tons.