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(a) How does the pressure of a liquid depend on its depth? Draw a labelled diagram to show that the pressure of a liquid (say, water) depends on its depth.
(b) Explain why, the walls of a dam are thicker near the bottom than at the top.
(a). All the liquids exert pressure on the base or bottom and walls of their container. All the liquid has weight. When we pour the liquid into a vessel, then the weight of the liquid pushes down on the base of the vessel producing pressure.
The liquid exerts pressure on the base of the vessel.
The pressure exerted by a liquid changes with depth in the liquid. The pressure exerted by liquid increases with increasing depth inside the liquid. The pressure exerted by a liquid is small just under the surface of the liquid. But as we go deeper into a liquid the pressure of the liquid increases. As the depth of liquid increases, the weight of the liquid column pushing down from above increases, and hence the pressure also increases.
Updated on: 10-Oct-2022
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