PHYS 1750: SELECTED TOPICS in PHYSICS
LECTURE 17. Angular Energy and Momentum.
| 9.4. | Rotational Energy | |
| 1. | Work = τθ = Iαθ | |
| 2. | KE = Iω 2/ 2 | |
| 3. | Rolling things: PE exchanged with sum of two KEs (linear+angular), and linear v = rω | |
| 9.5. | Angular Momentum | |
| 1. | Definition: L = Iω | |
| 2. | Direction of vectors L, ω: perpendicular to rotation plane with right hand rule | |
| 3. | Total always conserved | |