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Posted by on Thursday, February 3, 2011 at 9:35pm.

Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 80.0 m and the coefficient of friction is 0.38?

  • Physics - , Thursday, February 3, 2011 at 9:48pm

    At the maximum safe speed V, the maximum possible static friction force equals the centripetal force.

    M V^2/R = M g*0.38
    Cancel the M and solve for V

    V = sqrt(0.38 g R)

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