Question

how does the normal force on a concave surface and Bridge changed when a vehicle is travelling on it with constant speed​

Answer 1

Answer:

the velocity

Explanation:

Answer 2

Answer:

The motion of the motor car over a concave bridge AB ai the motion along the segment of a circle AB.

The centripetal force is provided by the difference of normal reaction R of the bridge and weight mg of the car.

∴R−mg=

r

mv

2

or R==mg+

r

mv

2

Clearly R> mg, i.e., the weight of the moving car is greater than the weight