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The formula for calculating Potential energy is P.E. = m * g * h, where 'm' is the mass of an object, 'g' is the acceleration of gravity, 'h' is the height of the object. 1  Stored mechanical energy: The energy which is possessed by an object due to its stored energy of position. 2  E.g., rubber bands, springs.
On a roller coaster, energy changes from potential to kinetic energy and back again many times over the course of a ride. Kinetic energy is energy that an object has as a result of its motion. All moving objects possess kinetic energy, which is determined by the mass and speed of the object. Potential energy is the energy an object has as a result of its position. Potential energy is stored energy that has not yet been released. Gravitational potential energy is potential energy that results from an object's position in a gravitational field, and is equal to the object's weight multiplied by its height. For example, a book placed on a shelf possesses gravitational potential energy because of Earth's gravity.