Question

A car moves in a circular track of radius 100m. The coefficient of friction between the road and the track is 0.2. Find the maximum velocity the car can move with, without skidding.

Answer 1

We have,

$\begin{array}{c}{f}_r=\mu N=\mu mg=\frac{m{V}_{max}^2}{r}\\ 0.2\times 10=\frac{V^2}{100}\\ V_{max}=10\sqrt{2}\end{array}$

$\therefore V_{max}=10\sqrt{2}$