A motor cyclist moving with a velocity of \(72\;km/hr\) on a flat road takes a turn on the road at a point where the radius of curvature of the road is \(20\) meters. The acceleration due to gravity is \(10\;m/s^2\). In order to avoid skidding, he must not bend with respect to the vertical plane by an angle greater than
1
\(q=\tan^{-1}\,6\)
2
\(q=\tan^{-1}\,2\)
3
\(q=\tan^{-1}\,25.92\)
4
\(q=\tan^{-1}\,4\)