Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538
Demonstrations are cataloged according to PIRA Bibliography
PLEASE REQUEST DEMOS WELL IN ADVANCE
Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.
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video - Vector Nature of Angular Momentum
Purpose:To demonstrate the vector nature of angular momentum by its conservation about a vertical axis of rotation on a spinning chair via the use of a bicycle wheel gyro and a pair of dumbbells.
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MP4 Format has Smaller File Size
DUMBBELLS: Sit on stool with dumbbells held straight out 180 degrees apart. Slowly rotate the stool then bring arms in towards body. Angular velocity will increase drastically.
BICYCLE WHEEL: Spin up bicycle wheel on buffer and hold its axis vertical while sitting on the stool. Slowly rotate the wheel axis 180 degrees and the stool will rotate in accordance with the law of conservation of angular momentum.