Question

Air exert pressure in all direction explain with the help of an experiment

Answer 1

Air or any fluid for that matter wouldexert force (due to pressure) normal to the surface it is in contact with. A fluid can exert force tangent to surface in contact only when the fluid is in motion via viscosity. Yes gravity doesexert a downward force on air.

Answer 2

Answer:

We have experienced that when we blow a balloon, the balloon becomes tight. If we try to fill more air, then the balloon will burst after an extent. This happens because air exerts pressure

We have also experienced the movement of fringes of windows and doors of our houses when wind blows in a high speed. This also happens because air exerts pressure