Why Are The Dams Over River Made Broader At The Bottom Than At The Top
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the dams are broader at the bottom because there is highest atomospheric pressure at the bottom example, divers have to wear a special kind of suit before diving so they are made of special material like alluminium
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Pressure exerted by a liquid is dependent on the depth that it increases with greater pressure . That is to say, as the depth increases, pressure applied by water on the walls of the dam also increases. In order to withstand the great pressure, the walls are build thicker. Hence a dam has broader walls at the bottom then at the top.
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