The Coefficient of Static Friction for the Tires of a Race

question 23

Multiple Choice

The coefficient of static friction for the tires of a race car is 0.950 and the coefficient of kinetic friction is 0.800. The car is on a level circular track of 50.0 m radius on a planet where compared to Earth's . If the car is to be able to travel at the same speed on the planet as on Earth, the radius of the track on the planet must be ____ times as large as the radius of the track on Earth.

• A) 0.250
• B) 0.500
• C) 1.00
• D) 2.00
• E) 4.00

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