10_ChapSummary

10_ChapSummary - SUMMARY The goals of Chapter 10 have been...

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energy kinetic energy, K gravitational potential energy, joule, J mechanical energy law of conservation of mechanical energy U g restoring force elastic equilibrium length, displacement from equilibrium, spring constant, k Hooke’s law D s L 0 elastic potential energy, perfectly elastic collision energy diagram stable equilibrium unstable equilibrium U s SUMMARY The goals of Chapter 10 have been to introduce the ideas of kinetic and potential energy and to learn a new problem-solving strategy based on conservation of energy. Law of Conservation of Mechanical Energy If there are no friction or other energy-loss processes (to be explored more thoroughly in Chapter 11), then the mechanical energy of a system is conserved. Thus K is the sum of the kinetic energies of all particles. U is the sum of all potential energies. K f 1 U f 5 K i 1 U i E mech 5 K 1 U Solving Energy Conservation Problems MODEL Choose a system without friction or other losses of mechanical energy.
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This note was uploaded on 09/26/2010 for the course PHYS 021 taught by Professor Dick during the Spring '08 term at GWU.

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