A car of mass `m` moving over a convex bridge of radius `r` .Find the normal reaction acting on car when it is at bighest point the bridge.

Options

A. `Mg+(Mv^(2))/(r)`
B. `(Mv^(2))/(r)`
C. `Mg-(Mv^(2))/(r)`
D. None of these

Answer

C

Explanation

`Mg-N=(Mv^(2))/(r)`
or `N=Mg-(Mv^(2))/(r)`