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Friction does depend on the path taken
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· Consider Example 7.10 where the nonconservative frictional force changes with path.
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Force as the derivative of potential energy |
· Refer to Figure 7.22 as it examines spring and gravitational energies.
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· Follow Example 7.13 on the potential energy of an electric force.
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Law of conservation of energy |
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 Law of conservation of energy
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Energy is never created or destroyed; it only changes form. |
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Energy diagrams give us insight |
· Figure 7.23 shows the situation and the resulting energy diagram. Information may be discerned about limits and zeros for the physical properties involved.
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