what is liquid pressure and laws of liquid pressure ?
Answers
Answer:
Liquid pressure is the increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it. We calculate liquid pressure using the equation liquid pressure = mass x acceleration due to g density x depth in fluid.
The laws of liquid pressure are. (i) Pressure inside the liquid increases with the depth from the free surface of the liquid. (ii) Pressure is same at all points on a horizontal plane, in case of stationary liquid.
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Liquid Pressure
The pressure applied by the liquid on the bottom and walls of the vessel is called liquid pressure.
Liquid pressure at a point at the depth h below the free surface of liquid is p = hdg
where, d density of liquid.
Lifting force of balloon => V = (p-a)g
where, p= density of air
a=density of gas in balloon.
Laws of Liquid Pressure
(i) The pressure inside a liquid is same at every point on the same horizontal plane.
(ii) The pressure at a point in liquid is same in all directions.
(iii) The pressure exerted by the liquid is normal to any surface with which the liquid is in contact.
(iv) The pressure at any point within the liquid is independent of shape of liquid surface as well as the area of liquid surface.