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ERIC Number: EJ876112
Record Type: Journal
Publication Date: 2010-Mar
Pages: 1
Abstractor: As Provided
Reference Count: 6
ISSN: ISSN-0031-921X
Happy Balls, Unhappy Balls, and Newton's Cradle
Kagan, David
Physics Teacher, v48 n3 p152 Mar 2010
The intricacies of Newton's Cradle are well covered in the literature going as far back as the time of Newton! These discussions generally center on the highly elastic collisions of metal spheres. Thanks to the invention of happy and unhappy balls, you can build and study the interaction of less elastic systems (see Fig. 1).
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A