What is the need for banking of tracks? Draw free body diagram of a car negotiating a banked track [ Take friction into account]. Write the expression for maximum velocity to negotiate the curve safely.

Explanation

A vehicle moving along a curved path needs some centripetal force. If the path is banked. i.e., inclined with the horizontal , then the horizontal components of friction and normal reaction help to provide this centripetal force. The vehicle may attain a velocity greater than that if the path would have been horizontal along the curve.