1. The problem statement, all variables and given/known data A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk and 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 298-mile trip in a typical midsize car produces about 1.1 x109 J of energy. How fast would a 13-kg flywheel with a radius of 0.34 m have to rotate in order to store this much energy? Give your answer in rev/min. 2. Relevant equations K= 1/2 I w2 3. The attempt at a solution 1.1 x 109= .5 (13 (.34)2) w2 solved for w n got the wrong answer. Please tell me where im going wrong!!