1. Have one five pound weight in each hand (a total of 10 pounds.)
2. Sit on a rotating office stool or chair.
3. Hold your arms (with the weights in each hand) extended out to the side.
4. Have one of your classmates lightly spin the stool.
5. Make note of how fast you are spinning.
6. Slowly move your arms into your body.
7. Make note of how fast you are spinning.
8. Slowly move your arms out to your sides again. Note your speed again.
9. Virtual Demonstration: View the following website for a demonstration of Conservation of Angular Momentum.

http://liftoff.msfc.nasa.gov/academy/rocket_sci/orbmech/angular_momentum.html

3. How does this demonstration explain the Conservation of Momentum?

1. Obtain a balloon from your teacher.
2. Blow into the balloon. Seal the end with your finger.
3. Let go of the balloon.

4. What kind of pressure did you have in the balloon (High or Low) when you sealed it?

5. In comparison, what kind of pressure did you have in the room (High or Low)?

6. When you released the balloon, did the air flow from high pressure to low pressure or from low pressure to high pressure?

Go to Part 3.