Posted by sandhu on Tuesday, November 23, 2010 at 8:28am.
The static coefficient of friction, which you call ěs=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
thanks a lot
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