At what angle must a railway track with a bend of 250 m radius be banked for safe running of a train at a speed of 72 kmh^(-1).

At what angle must a railway track with a bend of 250 m radius be bank

1.	At what angle must a railway track with a bend of 250 m radius be banked for safe running of a train at a speed of 72 kmh^(-1).
Answer» Solution :`TAN theta = v^(2)//RG = 20^(2)//250 XX 9.8 = 0.1632, theta = 9.27^(@)`