A Car Traveling at a Steady 20 M/s Rounds an 80-M

question 66

Multiple Choice

A car traveling at a steady 20 m/s rounds an 80-m radius horizontal unbanked curve with the tires on the verge of slipping.What is the maximum speed with which this car can round a second unbanked curve of radius 320 m if the coefficient of static friction between the car's tires and the road surface is the same in both cases?

• A)160 m/s
• B)80 m/s
• C)70 m/s
• D)40 m/s
• E)30 m/s

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