The maximum speed that can be achieved without skidding by a car on a circular unbanked road of radius R and coefficient of static friction μ, is 

(1) μRg

(2) Rgμ

(3) μRg

(4) μRg

Concept Videos :-

#16-Static-Friction-Force
#17-Solved-Examples-8
#18-Solved-Examples-9
#19-Solved-Examples-10
#20-Kinetic-Friction-Force
#21-Solved-Examples-11

Concept Questions :-

(4) In the given condition the required centripetal force is provided by frictional force between the road and tyre.

mv2R=μmg

v=μRg  

Difficulty Level:

  • 6%
  • 5%
  • 11%
  • 80%