Calculate the potential energy of a steel cube with an edge length of 10 cm at a height of 1.5 m above the ground.

Problem data: a (length of the edge of the steel cube taken) = 10 cm (in SI a = 0.1 m); h (height above the ground) = 1.5 m.

Reference values: g (acceleration due to gravity) ≈ 10 m / s2; according to the condition ρс (steel density) = 7800 kg / m3.

The potential energy of the steel cube taken can be determined by the formula: En = m * g * h = ρс * V * g * h = ρс * a ^ 3 * g * h.

Let’s perform the calculation: Ep = 7800 * 0.1 ^ 3 * 10 * 1.5 = 117 J.

Answer: The taken cube has a potential energy of 117 J.