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How does pressure increase in water?

Published in Water Pressure 1 min read

Pressure in water increases as you go deeper due to the weight of the water above.

Here's a more detailed explanation:

  • Weight of Water: Water has weight. This weight exerts a force on everything below it.

  • Increased Depth, Increased Weight: As you descend into the water, there is more water above you. This increased amount of water translates directly into a greater weight pressing down.

  • Pressure as Force per Unit Area: Pressure is defined as the force acting per unit area. Since the weight (force) of the water increases with depth, the pressure also increases proportionally.

  • Formula: The pressure at a certain depth is governed by the formula: P = ρgh, where:

    • P = Pressure
    • ρ = Density of water (approximately 1000 kg/m³)
    • g = Acceleration due to gravity (approximately 9.81 m/s²)
    • h = Depth

In simple terms: Imagine a stack of books. The book at the bottom feels the weight of all the books above it. Similarly, the deeper you go in water, the more water is "stacked" above you, increasing the pressure.

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