Demonstrations

Inertia of Rest - Coin/Card Snap

Code Number :	1F20.34
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. Further information regarding legal liability in use of demonstrations and labs will be found on the web site Injuries in School/College Laboratories in USA. The University of Iowa Disclaimers: U of Iowa Disclaimer All Rights Reserved..
Condition :	Good
Principle :	Inertia of Mass
Area of Study :	Mechanics
Equipment :	Inertia App., Note cards, Tissue Paper, Pennies, Tongue Depressor.
Procedure :	Set the demo up with a note card between the ball or marble and the cup. Hit the note card with the spring striker and the card will fly out from underneath the ball and the ball will fall straight down into the cup. (For more dramatic effect the instructor may try to pull a tablecloth from underneath some table settings. (PIRA Demonstration Bibliography 1F20.30). Make a stack of pennies. Swing the tongue depressor against the bottom penny and the penny should shoot out leaving the stack intact.

References

Martin Gardner, "Bottle, Hoop, and Dime", TPT, Vol. 32, # 2, Feb. 1994, p. 80.

Graciela Brizuela and Alfredo Juan, "An Easy Method for Measuring CO₂ Molecular Weight", TPT, Vol. 30, # 7, Oct. 1992, p. 408.

T.P. Toepker, "Newton and the Apples," TPT, Vol. 26, # 3, p. 165, (March 1988).

Alfred M. Eich, "Inertia Demonstration," TPT reprints (April 1963-Dec. 1971), p. 162.

Alfred M.Eich, "Inertia Demonstration", TPT, Vol. 6, # 9, Dec. 1968, p. 477

Mario Iona, "Inertia", TPT, Vol. 6, # 8, Nov. 1968, p. 457.

Alfred Eich, "The Author Replies", TPT, Vol. 6, # 8, Nov. 1968, p. 457.

M- 234: "Egg & Pie Pan-Nickels & Ruler," DICK and RAE Physics Demo Notebook.

M- 226: "Coin-Card-Glass & Ball-Card," DICK and RAE Physics Demo Notebook.

Robert Ehrlich, "Shooting a Penny Out From Under a Stack of Pennies," Turning the World Inside Out, p. 21.

Walpole, "The Lazy Coin," 175 Science Experiments, p. 102.

Walpole, "Demolish the Tower," 175 Science Experiments, p. 103.

Mail Questions and Comments to: Dale Stille