A motor car of mass 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 exerted by the car on the bridge is

Options

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

Answer

C

Explanation

`mg-F=(mv^(2))/r:.F=mg-(mv^(2))/r`