question_answer

A motor cyclist moving with a velocity of 72 km/h on a flat road takes a turn on the road at a point where radius of curvature of road is 20 m. In order to avoid skidding, he must not bend with respect to the vertical plane by an angle \[\theta \] greater than:            

A)              \[{{\tan }^{-1}}(4)\]                           

B)              \[{{\tan }^{-1}}(6)\]

C)              \[{{\tan }^{-1}}(2)\]   

D)                                     \[{{\tan }^{-1}}(25.92)\]