A car enters a banked portion (15 degrees) of a curved road. The speed the car is traveling at is constant and is 8 m/s.

A car enters a banked portion (15 degrees) of a curved road.  The speed the car is traveling at is constant and is 8 m/s.  If the car weighs 3000kg and the friction is sufficient enough to keep the car from sliding down the bank, coefficient is equal to 0.3.

What is the normal force being exerted by road onto the wheels?

What is the radius of curvature of the road?