question_answer

A motorcycle is going on an overbridge of radius \[R\]. The driver maintains a constant speed. As the motorcycle is ascending on the overbridge, the normal force on it                                                 [MP PET 1997]

A)             Increases

B)                      Decreases

C)             Remains the same      

D)             Fluctuates

Correct Answer: A

Solution :

                \[R=mg\cos \theta -\frac{m{{v}^{2}}}{r}\]                                        when q decreases cosq increases i.e., R increases.