A woman is driving her classic 1991 Jaguar Sovereign. The Jaguar\'s mass is m an

Question

A woman is driving her classic 1991 Jaguar Sovereign. The Jaguar's mass is m and its center of mass is a distance h above the road. The distances between the center of mass and the rear and front wheels are l_r and l_f respectively. To avoid a collision, the woman applies the brakes.

a) Determine the friction forces on the Jaguar's front and rear tires, f_r and f_f, respectively, in terms of l_f, l_r, h, m, kinetic friction coefficient mu, and gravitational acceleration, g. HINT: take moments about the Jaguar's center of mass.

b) Compute f_r and f_f for m = 1805kg, l_f = 1.20m, l_4 = 1.47m, h = 1m and mu = 0.8

Explanation / Answer

vertical equilibrium r1 + r2 = mg frictional forces (F1 + F2) moments about G (F1+F2)h + r1a = r2a r1-r2 = (F1+F2)h/a

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