An automobile of mass `m` is crossing over a convex upward over bridge with a speed `v` . If the radius of the bridge is `r` the thrusrt on the bridge at the highest point will be.

Options

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

Answer

B

Explanation

Thrust=weight-centripetal force.