Three identical cars A, B and C are moving at the same speed on three bridges. The car A goes on a plane bridge, B on a bridge convex upward and C goes on a bridge concave upward. Let F A , F B and F C be the normal forces exerted by the cars on the bridges when they are at the middle of bridges.

Question

Philoid · Accepted Answer

Normal force on a plane bridge is equal to weight of the car. So, on a convex upward bridge due to the upward inertial

force the apparent weight reduces and so is the normal force acting on the vehicle. But at the middle of concave upward bridge this

inertial force is downward making the apparent weight greater.

Therefore, the normal force is maximum in this case

Three identical cars A, B and C are moving at the same speed on three bridges. The car A goes on a plane bridge, B on a bridge convex upward and C goes on a bridge concave upward. Let FA, FB and FC be the normal forces exerted by the cars on the bridges when they are at the middle of bridges.

Three identical cars A, B and C are moving at the same speed on three bridges. The car A goes on a plane bridge, B on a bridge convex upward and C goes on a bridge concave upward. Let F_A, F_B and F_C be the normal forces exerted by the cars on the bridges when they are at the middle of bridges.