Difference between revisions of "Ball and feather in air/vacuum"
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| Line 9: | Line 9: | ||
*Vacuum pump | *Vacuum pump | ||
*Clear flexible tubing | *Clear flexible tubing | ||
| − | + | *Power cable | |
| − | + | *Extension cord | |
| − | |||
==Instructions== | ==Instructions== | ||
Revision as of 12:54, 23 June 2014
PIRA index: 1C20.10
Description
A feather falls more slowly than a ball down a tube due to air resistance. When the tubes are evacuated, both the feather and ball fall with equal speed.
Equipment
- Double tube assembly
- Vacuum pump
- Clear flexible tubing
- Power cable
- Extension cord
Instructions
With both cylinders in air, rotate the tubes by 180 degrees...
Keywords
ball, drop, feather, vacuum
Images & Movies
caption
caption
caption
