A train runs along an unbanked circular track of radius 30 m at a speed of 54 km/h . The mass of the train is 10 kg. What provides the centripetal force required for this purpose- The engine or the rails ? What is the angle of banking required to prevent wearing out of the rail ?

Answer

`37.42^(@)`

Explanation

`tan theta = v^(2)//rg = 15^(2)//30 xx 9.8 = 0.7653, theta = 37.42^(@)`