Potential Energy

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8 Terms

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Potential Energy is defined as

Stored energy. In either PE or U

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Gravitational Potential Energy

Stored energy due to gravity

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GPE Equation

GPE= mgh

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When is GPE zero?

The lowest point an object can reach in a given problem (surface of the earth or floor)

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Elastic Potential Energy is defined as

Stored energy due to a spring

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EPE Equation 

EPE= ½ k x²

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Expand EPE Equation

EPE=1/2 k x², k=force constant of a spring (N/m), x=amount the spring has been stretched or compressed from its equilibrium position (m).

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When is Elastic Potential Energy zero?

EPE is zero when a spring is in its equilibrium position (not being stretched or compressed)