How Do You Calculate Frictional Forces on a Car on an Incline?

AI Thread Summary
To calculate the frictional forces on a car on a 32.5° incline, first determine the weight distribution, with each wheel supporting 2.68 x 10^3 N. The frictional force exerted by the road on each wheel can be calculated using the incline angle and the weight supported by each wheel. Additionally, the total frictional force applied by the brakes can be found by considering the brake radius of 20 cm. The discussion also clarifies a typographical error regarding the brake radius. Understanding these calculations is crucial for solving the problem accurately.
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Homework Statement


A car weighing 1.07 104 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 2.68 103 N to the center of each wheel. The tire radius is 35 cm and the brake radius is 20sm
(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.



Homework Equations





The Attempt at a Solution

 

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what is 20sm?
 
SORRY IT SHOULD READ 20 cm
 

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