If the overbridge is concave instead of being convex, the thrust on the road at the lowest position will be

Options

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

Answer

A

Explanation

Thrust at the lowest point of concave bridge
`mg+(mv^(2))/(r)`.