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Work-Energy Theorem. . Since F = ma, and W = Fcosq d, then work must result in an object's velocity being altered.Recall, v2 = v02 2 a x , multiply by m,m v2 = mv02 2 ma x, divide by 2 mv2 = mv02 F x, identify Fx as W mv2 mv02 = W, define K = mv2So,K K0 = W, or
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1. Energy Work Energy Theorem, Kinetic Energy and Potential Energy
2. Work-Energy Theorem
3. Example
4. Another Example
5. Potential Energy Energy that is associated with position in a force field.
Examples:
Gravitational Potential Energy
Spring Potential Energy
U, the symbol for potential energy.
Units for PE are Joules, J
6. Potential Energy-Zero Point
7. Example
8. Example