In the early afternoon, a car is parked on a street that runs down a steep hill, at an
Chapter 6, Problem 85(choose chapter or problem)
In the early afternoon, a car is parked on a street that runs down a steep hill, at an angle of 35.0 relative to the horizontal. Just then the coefficient of static friction between the tires and the street surface is 0.725. Later, after nightfall, a sleet storm hits the area, and the coefficient decreases due to both the ice and a chemical change in the road surface because of the temperature decrease. By what percentage must the coefficient decrease if the car is to be in danger of sliding down the street?
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