PHY2061 R. D. Field Department of Physics chp28_4.doc University of Florida Potential Energy & Electric Potential Mechanics (last semester!): Work done by force F in going from A to B: WFdrABbyFAB→=⋅∫rrPotential Energy Difference ∆U: WUUUFdragainstFBAAB→==−=−⋅∫∆rrrrFUUxxUyyUzz=−∇ =−−−∂$$$Electrostatics (this semester): Electrostatic Force: rrFqE=Electric Potential Energy Difference
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