The differential gear of a car axle permits the wheel on the left side of a car to rotate at a different angular speed than the wheel on the right side. The car is driving at a constant speed about a circular track on level ground, finishing each lap in 18.7 s. The distance between the tires on the left and right sides of the car is 1.44 m, and the radius of each and every wheel is 0.370 m. Determine the difference between the angular speeds of the wheels on the left and right sides of the car?