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July 2, 2015

Homework Help: physics

Posted by Elizabeth on Sunday, November 15, 2009 at 4:39pm.

A 10g marble is spun so that it rolls at 150rpm around the inside of a steel tube. The tube has a 12cm diameter. Assume the rolling resistance is small enough for the marble to maintain 150rpm for several seconds. During this time, will the marble spin in a horizontal circle or will it spiral down in the tube?

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