Q 11-04-029NEETEAMCET 2010 (Medical)Easy
A car is travelling along a curved road of radius $r$. If the coefficient of friction between the tyres and the road is $\mu$, the car will skid if its speed exceeds
Answer: (D) $\sqrt{\mu rg}$
Friction supplies the centripetal force, up to its limit $\mu mg$:
$$\frac{mv^2}{r} \le \mu mg \;\Rightarrow\; v_{max} = \sqrt{\mu rg}$$
Solution by Sreeraj P, M.Sc Physics