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A car traveling on an unbanked road can attain a maximum speed of 55 mi/hr and s

ID: 2114971 • Letter: A

Question

A car traveling on an unbanked road can attain a maximum speed of 55 mi/hr and stay on the road. If the radius of the road is 300 ft, what is the coefficient of static friction between the tires and the road? 0.34 0.08 0.01 0.68 A car traveling on an unbanked road can attain a maximum speed of 55 mi/hr and stay on the road. If the radius of the road is 300 ft, what is the coefficient of static friction between the tires and the road? 0.34 0.08 0.01 0.68 0.34 0.34 0.08 0.08 0.08 0.01 0.01 0.01 0.68 0.68 0.68

Explanation / Answer

mv^2/r = mu*mg

m*(55*1.6*1000/3600)^2/(300*.33) = mu*m*9.8

mu = .615

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