A train runs along an unbanked circular track of radius30 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 ?

A train runs along an unbanked circular track of radius30 m at a speed

1.	A train runs along an unbanked circular track of radius30 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» Solution :`tan theta = V^(2)//RG = 15^(2)//30 xx 9.8 = 0.7653, theta = 37.42^(@)`