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Pail of Water/Pail of Nails
# 1D50.40

Description: A platform holding a vessel of some "fluid" is spun in a circle to show central forces.

Instructions: The "fluids" alluded to can be nails, plastic wire nuts, or other such (somewhat) discrete "fluids", or something continuous like water. Start the motion by "rocking" the platform back-and-forth until you have the motion going, and then try swinging it in a complete circle.

Hazards: A wet (if water is used) or cluttered mess can result from poor planning or a bad swing.

Parts: One plastic platform
Plastic cup
Fluid (water, or other non-wet items)

Purchased/Built: built

Quant. in Demo Room: 1

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 05-21 Rotate a bucket of water in a vertical circle.
Sutton M-154 Swing a bucket of water over your head.
Freier and Anderson Mb-29 A pail of water is whirled around in a vertical circle.

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