Assignment:
The sleepers of a railway track which is turning round a bend of radius 60m are banked so that a train traveling at 40 km/hr exerts no lateral force on the rails. Find the lateral force exerted on the rails by an engine of mass 10^5 kg when traveling at 30 km/hr? Does the force act on the inner or out rail? How does one know?
Provide complete and step by step solution for the question and show calculations and use formulas.