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ERIC Number: EJ1115425
Record Type: Journal
Publication Date: 2016-Sep
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0031-921X
Let's Weigh in on "Deflategate"
Toepker, Terrence
Physics Teacher, v54 n6 p338-339 Sep 2016
The September 2015 paper "Bouncing Back from 'Deflategate'" is a very interesting article from a physics viewpoint. However, we doubt that the National Football League (NFL) officials will bounce footballs and measure the coefficient of restitution to verify that the footballs remain properly inflated. The release of a few pounds per square inch (psi) from a football seems trivial until one reads about the millions of dollars in suspensions, fines, and legal fees that were accrued. What is a possible solution that the NFL might actually use? Weigh the ball! When a small amount of air is deliberately released, causing a change in pressure, the change in mass can be calculated and measured. Note that the change in mass can be measured without making another pressure measurement. This is important because the reinsertion of the needle of the gauge to make another measurement causes a small inadvertent loss of pressure and mass from the ball. [For "Bouncing Back from 'Deflategate,'" see EJ1074870.]
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A