Posted by **Cory** on Tuesday, November 16, 2010 at 9:46pm.

What is the total force on the bottom of a swimming pool 22.0 m by 8.9 m whose uniform depth is 1.6 m?

What is the absolute pressure on the bottom of a swimming pool?

What will be the pressure against the side of the pool near the bottom?

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**MathMate**, Tuesday, November 16, 2010 at 11:01pm
Pressure at depth 1.6m

= ρgh

= 1000 kg/m³ * 9.8 m/s² * 1.6 m

= 15,680 N/m²

Force = pressure * area

Hydrostatic pressure acts *equally* in all directions, i.e. downwards and sideways.

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**Cory**, Tuesday, November 16, 2010 at 11:09pm
That didn't give me the correct answer

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**MathMate**, Wednesday, November 17, 2010 at 11:34am
What did you get?

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**MathMate**, Wednesday, November 17, 2010 at 11:38am
Sorry, I didn't read properly.

The question requested *absolute* pressure, which includes atmospheric pressure, equal to about 103.59 kPa.

Watch out for units when you add hydrostatic pressure in N/m² (=Pa) to atmospheric pressure in kPa.

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**george**, Friday, July 1, 2011 at 2:46am
What is the pressure acting on your body if you dive down to a depth of 3.4 m?

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**Chris**, Tuesday, July 19, 2011 at 2:30pm
P fluid=r x h x g wher h =3.4m

P total =P atmospheric + P fluid

Normal atmospheric pressure = 1.01 x 10^5

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