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The coefficient of static friction between hard rubber and normal street pavement is about 0.7.?

The coefficient of static friction between hard rubber and normal street pavement is about 0.7. On how steep a hill (maximum angle) can you leave a car parked?
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Let x = angle of the inclineW sin x = weight along inclineW cos x = weight normal to the inclineW sin(x) = 0.7 W cos (x) sin (x)/cos (x) = 0.7tan (x) = 0.7x = arctan (0.7) = 34.99 deg... Show More
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It depends upon the height of the car’s center of mass. However, if the car is very flat, we can assume the center of mass is at zero height. In that case, John S’s analysis is correct.... Show More
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This question is impossible to solve without knowing the location of the vehicle’s center of mass relative to its wheels. Unless you start guessing about the weight bias of the car, and the height of the center of mass, you cannot obtain a meaningful answer.... Show More
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