Spinning to a Rolling Stop
Library Home || Full Table of Contents || Suggest a Link || Library Help
|Ivars Peterson (MathTrek)|
|The underlying mathematics of spinning disks. Spin a coin on a tabletop. As it loses energy and tips toward the surface, the coin begins to roll on its rim, wobbling faster and faster. Toward the end, the coin generates a characteristic rattling sound of rapidly increasing frequency until it suddenly stops with a distinctive shudder. Mathematician H. Keith Moffatt has come up with an explanation of why this motion ends so abruptly instead of lingering as the coin keeps on rolling faster...|
|Levels:||High School (9-12), College|
|Resource Types:||Problems/Puzzles, Articles|
|Math Topics:||Fluid Mechanics|
© 1994-2013 Drexel University. All rights reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.