To drive a typical car at 56 mph on a level road for one hour requires about 3.7 × 10^7 J of energy. Suppose we tried to store this much energy in a spinning, solid, uniform, cylindrical flywheel. A large flywheel cannot be spun too fast or it will fracture. If we used a fly wheel of diameter 2.05 m and mass 333.3 kg, what angular speed would be required to store 3.7 × 10^7 J? Give your answer in rad/s.