A metal ball with a mass of 1.5 falls to the ground from a height of 2 m what kind of work does gravity do at the same time

The work that gravity will do will be equal to the difference in the potential energies of the metal ball in the initial and final positions. Having fallen, the metal ball is on the surface of the earth and the work of gravity is equal to the potential energy of this ball at a height of 2 m.

A = Ep = m * g * h, where m is the mass of the metal ball (m = 1.5 kg), g is the acceleration of gravity (assumed g = 10 m / s2), h is the initial height of the ball (h = 2 m).

A = 1.5 * 10 * 2 = 30 J.

Answer: Gravity does 30 J.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.