Pressure Variation with Altitude

Introduction to the pressure variation with altitude:

If you stand on a pole of small and irregular stone, your feet get hurts. The total force exerted by the stone is equal to your weight w if you manage to stand on it. Even if you stand on a green lawn, the force exerted by the lawn on your feet is same w. However, the soft grass of the lawn is much easier on the feet than the stone. The reason is the difference in area over which this force is distributed. When you stand on stone, the actual area of contact is much smaller than that when you stand on grass. The feeling of pain is more depends on the force per unit area, which is called pressure. I like to share this conversion from celsius to fahrenheit formula with you all through my article.

Variation of Pressure with Altitude

The force per unit area is an important quantity and hence it is given a name as pressure. If a force acts perpendicularly on a surface a, the pressure over the area is P = f / a

Just like liquids, gases too exert pressure. The air in the atmosphere exerts a force on everything in its contact. The pressure clue to the atmosphere is called atmospheric pressure. The atmospheric pressure is P = h d g, where h is the height of atmosphere, d = density of air, g = acceleration due to gravity. So, as we go on altitudes, the pressure becomes less and less due to the decrease in the height of atmosphere. Due to this reason, the doctors advised the heart patients to go on mountains or hill areas. Understanding Electromagnetic Spectrum Examples is always challenging for me but thanks to all math help websites to help me out.

Conclusion for the Variation of Pressure with Altitude

The liquid at rest exerts equal pressure in all direction at a point inside the liquid. The liquid at rest exerts equal pressure at all these points which are in one level inside the liquid (height is same). Pressure is independent of shape of the liquid surface as well as the area of the liquid surface. It only depends when the height of the liquid column. It is a scalar quantity and the unit of pressure is Pascal.