Question

2. If the coefficient of friction between vehicles and the road is 0.4 and the radius of curvature of

a circular curve of the road is 30 m. What is the maximum speed allowable if there is no

banking?

Answer 1

$F_a=F_{fr},$

$\frac{mv^2}r=\mu mg,$

$v=\sqrt{\mu gr}=10.8~\frac ms.$