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College and Engineering Physics Work-Energy Theorem 3 TOC Including Potential Energy Work-Energy Theorem The total work done on a systems is ALWAYS equal to the change in its kinetic energy
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College and Engineering PhysicsWork-Energy Theorem
1
TOC
Work-Energy Theorem
College and Engineering PhysicsWork-Energy Theorem
2
TOC
Work- Energy Theorem
In terms of potential energy, we have
KW total
nonconservative conseravtiveW W K
nonconservativeW U K
nonconservativeW K U
College and Engineering PhysicsWork-Energy Theorem
3
TOC
Including Potential Energy
W K
Work-Energy Theorem
nonconservative conservativeW W K
, ,T N f
, ,sp gw F F
nonconservative conservativeW K W
nonconservative g spW K U U
The total work done on a systems is ALWAYS equal to the change in its kinetic energy
College and Engineering PhysicsWork-Energy Theorem
4
TOC
Work-Energy Diagrams
Work K initial U initial K final U final
0.5 J 1.0 J 2.0 J -1.0 J
Total Energy 1.5 J 1.0 J
-0.5 J
Initial Final
Kinetic EnergyPotential EnergyTotal EnergyNonconservative Work
The nonconservative work is equal to the change in the total energy of the system
College and Engineering PhysicsWork-Energy Theorem
5
TOC
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