question_answer 9)

A car weighs 1800 kg. The distance between its front and back axles is 1.8 m. Its centre of gravity is 1.05 m behind the front axle. Determine the force exerted by the level ground on each front wheel and each back wheel. 

Answer:

Let  and  be the total reaction forces exerted by the level ground on front and back wheels respectively. The situation is shown in Fig. 7.102.     Fig. 7.102 For translational equilibrium of the car,   or  For rotational equilibrium of the car,   or            or            or          and        Force on each front wheel . Force on each back wheel .