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April 21, 2014

Homework Help: Physics

Posted by StressedStudent on Saturday, November 3, 2012 at 11:17pm.

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 482-mile trip in a typical midsize car produces about 3.38 x 109 J of energy. How fast would a 26.0-kg flywheel with a radius of 0.222 m have to rotate to store this much energy?

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