00:01
Based on the behavior of gases and the atmosphere, let us try to establish the relationship between air pressure, density and altitude.
00:25
The relationship between air pressure, density and altitude we have to establish as mentioned in the question.
00:37
As altitude increases, that is the height above the sea level increases.
00:48
Then both air pressure and density, p and rho, both of them decreases.
00:57
Let us explain why they decrease.
01:06
The decrease is due to the decrease of pressure and rho is due to decrease in the gravitational force of the earth.
01:22
Gravitational force of the earth decreases.
01:26
As a result, air pressure decreases because we know that atmosphere air exerts gravitational force on the air molecules.
01:47
But these air molecules are compressed and they come close to the earth due to the presence of gravitational force.
02:00
But as we move high in the altitude, higher in the atmosphere, there will be few air molecules above.
02:13
Due to this, air pressure will decrease.
02:18
Air pressure decreases...