### Determine the additional normal force exerted by the ground

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Each wheel of an automobile has a weight of 48 lb, a diameter of 23 in., and a radius of gyration of 9 in. The automobile travels around an unbanked curve of radius 450 ft at a speed of 65 mi/h. Knowing that the transverse distance between the wheels is 4.5 ft, determine the additional normal force exerted by the ground on each outside wheel due to the motion of the car.

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