Vertical Profile of Pressure
consider a column of air 1 inch2 in size extending from sea level to the top of the atmosphere.
the weight (=mass X gravity) of the column of air will be about 14.7 lbs.
Hence, the pressure at sea level is = force/area = 14.7 lbs/inch2
Sea-level pressure is also given in other units:
Questions for thought:
How heavy would I have to be to exert sea-level atmospheric pressure by standing on you on one foot?????
Which exerts more pressure, a 4000 lb elephant standing on one leg with a foot size of 8" x 8" or a 120 lb woman standing on one leg in high-healed shoes with a heal size of 1"x1"?