Potential Energy

This type of energy that is stored in a body and has the potential to do work. There are several types:

1. Gravitational (GPE or E_P)
The energy a body has because it is near something with (normally) large gravity.

2. Chemical (CPE of E_C)
Energy a body has because of what it is made. This is present in an electrical cell, explosives, food and petrol.

3. Elastic (EPE or E_El)
Energy stored when something is stretched or compressed. This is present in a pulled rubber band, or a squashed spring.

4. Nuclear
Energy stored in the nucleus of atoms that can be released during fission, fusion or radioactive decay.