Q6 of 11 Page 268

Why do we not feel uneasy even under the enormous pressure of atmosphere above as well as around us?

Earth’s atmosphere consists of many gases which exerts force on the earth. Atmospheric pressure on the surface of the earth is about 1kh f per square centimetre. The surface area of the body of an average man is about 2m2, hence a total force equal to about 200000 N acts on the body of a man due to atmospheric pressure. But still we don’t feel uneasy by this enormous amount of pressure exerted on us because, the blood exerts a pressure that is slightly greater than the pressure that atmospheric pressure. Since, we exert a little higher pressure outwards so we don’t feel uneasy by this atmospheric pressure.


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