PHYS 1750: SELECTED TOPICS in PHYSICS
LECTURE 11. Conservation of Energy.
| 6.4. | Conservative Forces | ||
| 1. | Work independent of path | ||
| 2. | Return to start gives zero net work | ||
| 3. | Conservation of Mechanical Energy | ||
| a. | Ek+Ep constant | ||
| b. | Bodies moving in gravity | ||
| c. | Bodies pushed/pulled by a spring | ||
| 6.5. | Non-conservative cases | ||
| 6.6. | Conservation of Total Energy | ||
| 6.7. | Power: work done per second | ||
| 1. | P = F . v = Fvcosθ = W/Δt | ||
| 2. | Unit: 1 Watt = 1 J/s | ||