A motor car of mass m travels with a uniform speed v on a convex bridge of radius r . When the car is at he 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`