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) $\sqrt{\mu rg}$
Concept. Friction supplies the centripetal force, up to $\mu mg$.
Step 1. Limit. $\dfrac{mv^2}{r} \le \mu mg \Rightarrow v_{\max} = \sqrt{\mu rg}$.
Answer. $\sqrt{\mu rg}$ (Option D).
Solution by Sreeraj P, M.Sc Physics