Differences between the properties of the water hydrostatics

[bungle]

hey, iv got an asignment to do n I am really stuck on this part could anyone help? The question is...

Explain the properties of the water at rest behind the dam giving detail of how it exerts pressure on the dam. Also include details of any other properties you feel may be relevent. Explain the differences between the properties of the water behind the dam and when its moving down the pipe towards the treatment works. Note the change in diameter of the pipe between where it starts at the resevoir and where it empties into the storage tank.

If anyone can answer that then thanks a lot lol

 

[Hootenanny]

hey, iv got an asignment to do n I am really stuck on this part could anyone help? The question is...

Explain the properties of the water at rest behind the dam giving detail of how it exerts pressure on the dam. Also include details of any other properties you feel may be relevent. Explain the differences between the properties of the water behind the dam and when its moving down the pipe towards the treatment works. Note the change in diameter of the pipe between where it starts at the resevoir and where it empties into the storage tank.

If anyone can answer that then thanks a lot lol

Welcome to PF bungle,

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[Moetasim]

The properties of water at rest behind a dam can be explained through the principles of hydrostatics. Hydrostatics is the study of fluids at rest and the forces exerted on objects submerged in them. In this case, the water behind the dam is considered a fluid at rest.

One important property of water at rest is its density. Density is the mass of a substance per unit volume. Water has a density of approximately 1000 kg/m3, which means that it is relatively heavy for its volume. This density plays a crucial role in exerting pressure on the dam. As the water behind the dam is held in place, its weight creates a downward force on the dam, known as hydrostatic pressure. The higher the water level behind the dam, the greater the hydrostatic pressure exerted on the dam.

Another relevant property of water at rest is its surface tension. Surface tension is the cohesive force that holds the molecules of a liquid together at its surface. This plays a role in how the water exerts pressure on the dam as it creates a cohesive force that keeps the water molecules together and therefore increases the hydrostatic pressure.

When the water is moving down the pipe towards the treatment works, the properties of the water change. The most significant difference is the velocity of the water. As the water moves, its velocity increases, and this results in a decrease in pressure. This is known as Bernoulli's principle, which states that as the velocity of a fluid increases, its pressure decreases. This decrease in pressure is important as it allows the water to flow through the pipe towards the treatment works.

Additionally, the change in diameter of the pipe also affects the properties of the water. As the pipe narrows, the velocity of the water increases, and the pressure decreases. This is due to the conservation of mass principle, which states that the mass of a fluid remains constant in a closed system. Therefore, as the pipe narrows, the same amount of water must flow through it, resulting in an increase in velocity and a decrease in pressure.

In conclusion, the properties of water at rest behind the dam, such as density and surface tension, play a significant role in exerting pressure on the dam. As the water moves down the pipe towards the treatment works, its velocity and pressure change due to Bernoulli's principle and the conservation of mass principle. The change in diameter of the pipe also affects these properties. Understanding these properties is crucial in managing and utilizing water