What is the maximum amount of energy the mass can can change from gravitational potential energy to kinetic energy?

The maximum amount of energy that can be converted from gravitational potential energy to kinetic energy occurs when all of the initial potential energy is converted to kinetic energy. This can be calculated using the equation: PE = KE, where PE is the initial potential energy and KE is the final kinetic energy. In this scenario, the maximum amount of energy is equal to the initial potential energy of the object.