Question
A car is negotiating a curved road of radius R. The road is banked at angle 
. The coefficient of friction between the tyres of the car and the road is 
. The maximum safe velocity on this road is,
Solution
A.
A car is negotiating a curved road of radius R. The road is banked at angle 
and the coefficient of friction between the tyres of car and the road is 
.
The given situation is illustrated as:
In the case of vertical equilibrium,
N cos 
= mg + f1 sin 
mg = N cos 
... (i)
In the case of horizontal equilibrium,
... (ii)
Dividing Eqns. (i) and (ii), we get
