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Posted by on Friday, March 4, 2011 at 7:44pm.

A 1220 kg car rounds a circular turn of radius 19.2 m. If the road is flat and the coefficient of static friction between the tires and the road is 0.66, how fast can the car go without skidding?

  • Physics - , Friday, March 4, 2011 at 9:55pm

    Let mu_s be the static friction coefficient.

    If the road is not banked and the car is on the verge of slipping, the maximum static friction force equals the centripetal force.

    M*g*mu_s = M*V^2/R

    Cancel the M's.

    V^2 = R*g*0.66

    Solve for V

  • Physics - , Wednesday, October 23, 2013 at 11:24am

    5.6

  • Physics - , Tuesday, September 8, 2015 at 9:44pm

    isn't it 11.14? How the heck did you end up with 5.6?

    V = sqrt(19.2 * 9.8 * 0.66)
    V = 11.14

  • Physics - , Monday, November 21, 2016 at 4:24pm

    11.14, that is

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