μs determines when skidding will begin.
Maximum centripetal force provided by static friction
= (μs)mg
Maximum speed = v,
centrifugal force
= mv^2/r
At equilibrium,
(μs)mg = mv^2/r
Solve for v
v=sqrt(μs * rg)
=sqrt(0.85*215*9.81)
=42 m/s approximately
What is the greatest safe speed, without skidding, that a 1700 kg car can have on a level curve of radius 215 meters if Mk=0.4 and Ms=.85?
The correct answer is 42.3 but idk how to get it.
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