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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You have selected the following Demos:
video - Marble and Feather
Purpose:Falling objects in air vs. vacuum: to show that all objects would fall with acceleration "g" if not for air friction.
Procedure:The first set of videos below show both a marble and feather falling in air vs. vacuum. The second set of videos show only a feather falling in air vs. vacuum.
Hold the tube vertically and let the items fall. The feather (or paper) floats gracefully down and the nickel accelerates quickly to the bottom of the tube. Pump the air out of the tube and repeat the procedure. Both items now fall with equal acceleration.