The Lockheed C-5 Galaxy is a large military transport aircraft built by Lockheed. It was designed to provide strategic heavy airlift over intercontinental distances and to carry outsize and oversize cargo. Assume that the lift force on the airplane is perpendicular to the aircrafts wings. Suppose an airplane is flying in a large horizontal circle at a speed of 400 km h ^-1 . At what angle in degrees to the horizontal must the wings of the plane be tilted if the radius of the circle it is traveling in is 2 km?