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View Full Version : Calculating total force and absolute pressure


jstack10
Nov 23, 2008, 02:28 PM
What is the total force on the bottom of a swimming pool 1.6 m by 1.4 m whose uniform depth is 2.0 m?
I also need to solve for absolute pressure, how would I do this?

galactus
Nov 23, 2008, 03:07 PM
You have to know the weight density of what is in the pool.

A safe bet is that it's water:). The weight density of water is {\rho}=62.4 \;\ \frac{lb}{ft^{3}}

In metric, the weight density of water is 9810 \;\ \frac{N}{m^{3}}

h=depth of the pool and A is the area of the bottom.

Force is F={\rho}hA

Pressure is force per unit area. p=\frac{F}{A}={\rho}h