Name: _______________________________
Angular Momentum – Notes
1. Draw the first diagram. Write down the angular momentum L vector equation and then the
equation to determine the magnitude of L.
2. How do we determine the direction of the angular momentum vector?
3. What is the angular momentum of the Earth going around the Sun relative to Point C?
4. dL/dt =
5. The rate of change of angular momentum is called ______________.
6. What is the angular momentum of a small mass m a distance r from the center of rotation:
A. in terms of v equal to?
B. in terms of  equal to?
7. What is the angular momentum of a disk rotating with an angular speed  in terms of its
rotational inertia?
8. What are the 3 possible end stages of a star?
9. If the Sun were to collapse to a neutron star (which it won’t),
RSun =
RNeutron Star =
10. Why do neutron stars have such high rotation rates?
11. What happened in 1987?
MSun =
U =