1. Instructor: Dr. Tatiana Erukhimova
Physics 218: Mechanics
Instructor: Dr. Tatiana Erukhimova
Lecture 37
Hw: Chapter 15 problems and exercises

2. Orbital motion
Conservation of Angular Momentum

3. Moment of Inertia
For symmetrical objects rotating about their axis of symmetry:

4. A block of mass M is cemented to a circular platform at a distance b from its center. The platform can rotate, without friction, about a vertical axle through its center with a moment of inertia, Ip. If a bullet of mass m, moving horizontally with velocity of magnitude vB as shown, strikes and imbeds itself in the block, find the angular velocity of the platform after the collision. b vB
axle
top view

5. L before = L after

7. What is the moment of inertia of a disk of thickness h, radius R and total mass M about an axis through its center?

8. Rotational Kinetic Energy

9. R O F

10. Have a great day!
Hw: Chapter 15 problems and exercises