posted by Michael .
A car weighing 1.07 x 10^4 N is at rest on a 32.5° incline. Each wheel bears an equal part of the car's weight. Thus the axles apply a vertical downward force of 2.68 x 10^3 N to the center of each wheel. (a) Find the frictional force exerted by the road on each wheel (b) Find the sum of the magnitudes of the frictional forces fB applied by the brakes to the wheel, as shown in the figure below. The radius ti the brakes is 20cm. The radius of the tire is 35cm.