1. Rotational Energy and Momentum Rotational contribution to Energy Examples –Rolling down incline –Atwoods Machine again Rotational Energy vs. Angular Momentum Angular Momentum Conservation of Angular Momentum Examples –Colliding disks –One object changing Rotational Inertia –Colliding point objects and disks

2. Rotational energy contribution r1r1 m1m1 m2m2 r2r2

3. Example - Rotational energy contribution

4. Procession of Objects For objects rolling down incline plane (reminds me of) Higher moments of inertia

5. Review - Atwoods Machine with Pulley

6. Atwoods Machine with Pulley (Energy)

7. Rotational Energy and Angular Momentum

8. Angular momentum

9. Type 1 - Two identical disks

10. Type 1 – Disk and rod

11. Type 2 – Person on Platform

12. Type 2 – Figure Skater

13. Type 2 – Person on Stool

14. Type 2 – Example 8-15

15. Type 2 – Walking on Merry-Go Round

16. Type 3 – Linear collision with Disk

17. Type 3 – Collision with Asteroid

18. Collision with Asteroid (cont) Asteroid =100 tonne

19. Angular Momentum - Vector Bicycle Wheel Stability of Bicycle Gyroscope Crossing stream on narrow log Polanowskis story

20. Summary - Translation vs. Rotation

21. Translation vs. Rotation (cont)