The Coefficient of Static Friction for the Tyres of a Race

question 47

Multiple Choice

The coefficient of static friction for the tyres 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 $g=2.45 \frac{\mathrm{~m}}{\mathrm{~s}^{2}}$ compared to Earth's $g=9.80 \frac{\mathrm{~m}}{\mathrm{~s}^{2}}$ . The maximum safe speed on the track on the planet is ____ times as large as the maximum safe speed on Earth.

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

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Definitions:

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