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Conservative force
Any force which conserves mechanical energy, as opposed to a nonconservative force. See statement of conservation of mechanical energy.
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Conservative System
A system in which energy is conserved.
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Nonconservative Force
Any force which does not conserve mechanical energy, as opposed to a conservative force.
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Path independence
Property of conservative forces which states that the work done on any path between two given points is the same.
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Potential energy
The energy of configuration of a conservative system. For formulae, see Definition of potential energy, gravitational potential energy, and Definition of potential energy given a position-dependent force.
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Kinetic Energy
The energy of motion.
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Total mechanical energy
The sum of the kinetic and potential energy of a conservative system. See definition of total mechanical energy.
Terms
Formulae
| Definition of potential energy. | ΔU = - W |
| Gravitational potential energy. | UG = mgh |
| Statement of conservation of mechanical energy. | Δ(U+K) = 0 |
| Definition of total mechanical energy. | U + K = E |
| Definition of potential energy given a position-dependent force. | ΔU = -  F(x)dx |
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