physics

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A 3670 lb car going around an unbanked curve at a constant speed of 25 mph begins to slide (ìs=0.55 and ìk=0.45). What is the radius of the curve?

  • physics -

    The static coefficient of friction, which you call ìs=0.55, is the one to use.

    Equate the centripetal force to the friction force, and solve for R. The mass of the car will cancel out.

    0.55 g = V^2/R
    Solve for R.

    25 mph = 36.67 ft/s
    g = 32.2 ft/s^2

  • physics -

    thanks a lot

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