A circus performer weighing 60kg is at a height of 10m from the stretched net. What is the potential energy

A circus performer weighing 60kg is at a height of 10m from the stretched net. What is the potential energy of the artist relative to the net and relative to the circus arena if the net is stretched at a height of 12m from the arena level?

These tasks: m (mass of the circus artist) = 60 kg; h1 (artist’s height above the net) = 10 m; h2 (net height above the arena) = 12 m.

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

1) The potential energy of the circus performer relative to the grid: Ep1 = m * g * h1 = 60 * 10 * 10 = 6 * 10 ^ 3 J = 6 kJ.

2) Potential energy of a circus artist relative to the arena: Ep2 = m * g * (h2 + h1) = 60 * 10 * (12 + 10) = 13.2 * 10 ^ 3 J = 13.2 kJ.

Answer: The potential energy of the circus performer relative to the grid is 6 kJ; relative to the arena – 13.2 kJ.