  Other Forms of Energy

Other Forms of Energy, some we will study later.

Electrostatic energy

Thermal Energy

Radiant

Chemical

Nuclear

Sound

In physicsmechanical energy is the sum of potential energy and kinetic energy present in the components of a mechanical system. It is the energy associated with the motion and position of an object. The law of conservation of energy states that in an isolated system that is only subject to conservative forces, like the gravitational force, the mechanical energy is constant. If an object is moved in the opposite direction of a conservative net force, the potential energy will increase and if the speed (not the velocity) of the object is changed, the kinetic energy of the object is changed as well. In all real systems, however, non-conservative forces, like frictional forces, will be present, but often they are of negligible values and the mechanical energy's being constant can therefore be a useful approximation

How Mechanical Energy is Expressed

Mechanical energy is expressed into two major forms, kinetic and potential energy.  Kinetic energy is is the amount of energy an object has based solely on the motion (speed) of the object.  Potential energy is the energy an object is based solely on the position of the object.  To determine the amount of mechanical energy a single object has you must consider both potential and mechanical energy.