A motor car of `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 exterted by the car on the bridge is

A car of mass m moving over a convex bridge of radius r .Find the normal reaction acting on car when it is at bighest point the bridge.

A car of mass m moving over a concave bridge of radius r .Find the normal reaction acting on car when it is at lowest point the bridge

A motor car with a mass m moving with uniform speed v on a (A) horizontal level bridge (B) convex bridge (C) concave bridge The force exerted by the motor car when it is at centre of the bridge is

A car of mass m moves with a constant speed upsilon over (a) horizontal flat surface (b) convex bridge (c) concave bridge What force is exerted by the car on the bridge as it passes the middle point of bridge Radius of curvature of bridge is R .

A car is moving along a road with a uniform speed of 20 km/hour. The net force acting on the car is

A car is moving with uniform speed over a circular bridge of radius R which subtends an angle of 90^(@) at its center. Find the minimum posible speed so that the car can cross the bridge without losing the contact any where

A car is moving up with uniform speed along a fly over bridge which is part of a vertical circle. The true statement from the following is

Prove that a motor car moving over a (i) Convex bridge is lighter than the same car resting on the same bridge. (ii) Concave bridge is heavier than the same car resting on the same bridge.

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

A car when passes through a convex bridge exerts a force on it which is equal to