# Difference between revisions of "Potential energy"

From Conservapedia

DavidB4-bot (Talk | contribs) (→References: clean up & uniformity) |
(Added more general formula for gpe) |
||

Line 1: | Line 1: | ||

− | '''Potential energy''' is [[energy]] that is stored in an object | + | '''Potential energy''' is [[energy]] that is stored in an object. An example is gravitational potential energy such as that of a roller coaster train at the peak of its lift [[hill]].<ref>Wile, Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> |

− | The formula | + | The formula for gravitational potential energy for two point masses is: |

− | :<math> | + | :<math>V = -\frac{GMm}{r}</math> |

+ | |||

+ | where | ||

+ | :<math>G</math> is Newton's [[gravitational constant]] | ||

+ | :<math>M</math> and <math>m</math> are the [[mass (science)|masses]] of the two particles | ||

+ | :<math>r</math> is their separation | ||

+ | |||

+ | If one particle moves a radial distance (towards or away) from the other a distance <math>\Delta h</math> and <math>\Delta h \ll r</math>, then the change in potential <math>\Delta E</math> can be approximated by | ||

+ | |||

+ | :<math>\Delta E = mg \, \Delta h</math> | ||

+ | |||

+ | where <math>g</math> is the gravitational field strength in the vicinity of the initial and final points. | ||

==See also== | ==See also== |

## Revision as of 16:05, 23 November 2016

**Potential energy** is energy that is stored in an object. An example is gravitational potential energy such as that of a roller coaster train at the peak of its lift hill.^{[1]}

The formula for gravitational potential energy for two point masses is:

where

- is Newton's gravitational constant
- and are the masses of the two particles
- is their separation

If one particle moves a radial distance (towards or away) from the other a distance and , then the change in potential can be approximated by

where is the gravitational field strength in the vicinity of the initial and final points.

## See also

## References

- ↑ Wile, Jay L.
*Exploring Creation With Chemistry*. Apologia Educational Ministries, Inc. 1998