This is a draft cheat sheet. It is a work in progress and is not finished yet.
Potential Energy=U
Energy associated with particles in a system where particles exert forces on one another |
Gravitational U: |
Force between 2 masses (Often 1 mass and a planet) |
Elastic U: |
State of stretch or compression on elastic/springlike object. |
Work and U
∆U=-W |
Elastic: |
Change in elastic potential energy equals the negative of the work done by the spring force. |
Gravity: |
Change in gravitational potential energy equals the negative of the work done by gravity. |
Conservation and Non-Conservative Forces
Conservative |
Two or more objects with force that are able to be arranged in a way that transfers energy between kinetic energy and another form of energy, that can be reversed, and may be repeated. |
Non-Conservative |
Mass on surface with friction. The mass slides, kinetic energy is transformed to thermal by work done by friction. Friction can not change thermal back to kinetic energy. |
Path Independence of Conservative Forces |
Closed Path Test:The net work done by a conservative force on a closed path is zero. |
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Work done on a conservative force does not depend on the path taken. |
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