the foundation of a building or dam has a large surface area so that the pressure exerted by it on the ground which is done in order to prevent sinking of building or dam into the ground........how..????
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The foundation of dams and buildings have large surface area which prevents them from sinking. This is based on pascal's law of pressure; in which pressure is inversely proportional to surface area. Larger the surface area, less will be the pressure exerted. Similarly smaller the surface area, larger the pressure will be exerted. For this reason the surface area of dams and building is kept large so that minimum pressure is exerted.
Hope it helps.
The foundation of dams and buildings have large surface area which prevents them from sinking. This is based on pascal's law of pressure; in which pressure is inversely proportional to surface area. Larger the surface area, less will be the pressure exerted. Similarly smaller the surface area, larger the pressure will be exerted. For this reason the surface area of dams and building is kept large so that minimum pressure is exerted.
Hope it helps.
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