Question

A car travels at a speed of $60km/h$ on a level road on which there is an unbanked turn of radius $50m$. For which of the following value of coefficient of friction between the tyres and the road surface will the car not skid while turning?

• A. $0.5$
  
• B. $0.6$
  
• C. $0.3$
  
• D. $0.7$
  

Answer 1

The correct option is B $0.6$

The relation between coffiecent of friction and velocity is given by

$\mu =\frac{v^2}{rg}=\frac{{60}^2}{50\ast 9.8}=0.6$