How air pressure support mercury column?
Answers
The atmospheric pressure, the sinking action of the column of air, pushes against the reservoir mercury, which in turn pushes the mercury in the glass tube upwards and maintains it in that column.Answer:
Air pressure is able to support mercury column because the weight of the column of atmospheric air balances the weight of the mercury column
Explanation:
Mercury barometers are made of glass tube and mercury.
The basic structure of a mercury barometer consists of mercury placed in a glass tube that is about 3-feet long and placed upside down in a reservoir container full of mercury (known as reservoir mercury).
The end effect is that the pressure exerted or weight of the atmospheric air balances exactly with the pressure exerted by the mercury column.
