Work-Energy (WE) Equation for Particles

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Presentation transcript:

Work-Energy (WE) Equation for Particles Important: The WE equation is not a radically new concept. It is an integrated form of F = ma. Work of a Force: Work = (Force)(Distance) Units: ft-lb or N-m = Joule Work is a dot product: Work is a scalar, not a vector; this makes work-energy an easier method to apply.

Derivation of the Work-Energy Equation Two other ways to write Work-Energy Equation:

Now that we have the Work-Energy Equation… What are the work terms?

Where does the spring work term come from?

Other applications of: Traditional long bow: Compound bow:

Other applications of: Potato gun: Slingshot:

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