Referring to Problem 2.8, for W = 4000 lb, L = 117 in., c = 65 in., and h = 17.5 in., and µ = 0.7, determine the force on each of the two rear tires.
Problem 2.8
Draw a free-body diagram of an automobile of weight W that has a wheel base of length L during four-wheel braking. The center of gravity is a distance c forward of the rear axle and a distance of h above the ground. The coefficient of friction between the pavement and the tires is m. Also show that the load carried by the two front tires during braking with the motor disconnected is equal to W(c + µh)/L.