Question

give scientific reason the wall of a dam is broad at its base​

Answer 1

Answer:

The wall of a dam is broad at its base. The reason behind this is, pressure exerted by the liquid increases with increase in depth. The dam contains huge amount of water and as we go deep the pressure exerted by such a huge amount of water increases to very high.

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Answer 2

Explanation:

Dams are made broader at the base than at the top to withstand the pressure of the water behind it. As the pressure is greatest at the bottom, the dam must be made thickest at its base.