A motor cyclist moving with a velocity of 72 km per hour on a flat road takes a turn on the road at a point where the radius of curvature of the road is 20 metres. The acceleration due to gravity is 10 m/s2 . In order to avoid skidding, he must not bend with respect to the vertical plane by an angle greater than
(A) θ = tan-1 (6)
(B) θ = tan-1 (2)
(C) θ = tan-1 (25.92)
(D) θ = tan-1 (4)
