Question # $2$:

A vehicle performance is being tested on a large flat are. At this situation:

a$)$ What coefficient of side friction must be developed at a speed of $95k\frac{m}{h}r$ and a Degree of curvature $=9$ degrees

b$)$ What is the sharpest curve $($stated in degrees$)$ that the vehicle traveling at $80k\frac{m}{h}r$ can travel if the coefficient of side friction is $0\mathrm{.}15.$