Conversion of Energy:
Potential energy increases as long as the rubber band is stretched to the maximum extent and it gets
transformed in to Kinetic energy during the moment of its release.
Energy can neither be created nor destroyed but one form of energy can be transformed into another form of energy. There are two types of energy (1) Mechanical Energy and (2) Non Mechanical Energy
Mechanical energy can be either (a) Kinetic energy (or) Potential energy. Energy can be transferred from potential to kinetic and between objects. Potential energy is stored energy–energy ready to go. A lawn mower filled with gasoline, a car on top of a hill are all examples of potential energy.
Gravitational potential energy is the energy possessed by a body because of its elevation (height) relative to a lower elevation, that is, the energy that could be obtained by letting it fall to a lower elevation. For example, water at the top of a waterfall or stored behind a dam at a hydroelectric plant has gravitational potential energy.
Most of the energy under our control is in the form of potential energy. Potential energy can be viewed as motion waiting to happen. When the motion is needed, potential energy can be changed into one of the six forms of kinetic energy.
Kinetic energy is energy at work. A lawn mower cutting grass, a car racing down a hill, and students running home from school are examples of kinetic energy. So is the light energy emitted by lamps. Even electrical energy is kinetic energy. Whenever we use energy to do work, it is in the kinetic state.