(a) Find the frictional force exerted by the road on each wheel. (b) Find the su

Question

(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.

A car weighing 9.90 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. X 10^3 N is at rest on a 25.0° incline. Each wheel bears an equal part of the car's weight. Thus the axles apply a vertical downward force of 2.48

Explanation / Answer

a) the weight of the car acts in down direction. so we need to do its components parallel to incline . since the angle of incline is 25. the parallel component of weight is given as ::

Wparallel= W Sin25 = 9.90 x 103 Sin25 = 4183.92 N

this parallel component of force is balanced by the four equal frictional force acting at each tire.

let the frictional force by each tire be ''f''

so total frictional force = 4 f

so Wparallel = 4f

inserting the values

4183.92 = 4 f

f = 1045.98 N

b) sum of frictional forces = 4 f = 4 x 1045.98 = 4183.92 N

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