TOPIC:

ID Code: C8-11
Purpose: Shows that when energy disappears from the center of mass motion it may be converted into internal energy
Description: Hold the balls horizontally with the spring relaxed and drop; it should produce a high rebound. Then drop at an angle of about 45 degrees to the horizontal. The device will not rebound very high, but will develop a lot of internal energy, as evidenced by lots of spring vibration.
Availability: Available