(a) a. The components of forces acting on a vehicle moving on a curved banked road are represented in diagram as follows:
AC : inclined road surface AB : horizontal surface BC : height of road surface G : centre of gravity of vehicle W : (mg) weight of vehicle N : normal reaction exerted on vehicle. θ : angle of banking (b) Equation for maximum safety speed for the vehicle moving on the curved banked road is Vmax = √rg[
] where, r is radius of curved road. μs is coefficient of friction between road and tyres,θ is angle of banking. c. Significance of the terms i. The maximum safety speed of a vehicle on a curved road depends upon friction between tyres and roads. ii. It depends on the angle through which road is banked. Also absence of term ‘m’ indicates, it is independent of mass of the vehicle.