A motor car of `m` travels with a uniform speed `v` on a convex bridge of radius `r`. When the car is at the middle point of the bridge, then the force exterted by the car on the bridge is

Options

A. `mg`
B. `mg + (mv^(2))/( r)`
C. `mg - (mv^(2))/( r)`
D. `mg pm (mv^(2))/( r)`

Answer

C