Coin in a Cup




MPEG Movie (1.52 MB)

MPEG Movie (Courtesy of Paul Nord)

 

 


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 Code Number :   2C20.44

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Good   
Principle :   Bernoulli's Principle  
Area of Study :  Heat & Fluids  
Equipment :   Penny, Styrofoam or plastic cup, small block.

Procedure :   Place the penny about 5 cm to 8 cm from the edge of a table.  Tilt the cup with the block, make the lower lip of the cup about 2 cm off of the table and about 8 cm behind the penny.  Blow hard across the top of the penny and it should lift up and jump into the cup.
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   References

Brown, "Bernoulli with a Dime," 333 More Science Tricks and Experiments, p. 49.

Experiment 3.13: "Levitating a Dime,"  String and Sticky Tape Experiments.

Robert Ehrlich,  "Blowing a Quarter Into a Cup,"  Turning the World Inside Out, p. 106-107.

"Jumping Dime," Physics From the Junk Drawer, 3rd Edition, The Science House, North Carolina State University, p. 19.



Mail Questions and Comments to:  Dale Stille