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## Homework Statement

An evacuated spherical diving bell containing a camera is in the ocean at a depth of 121 m. It has a flat, transparent, circular port with a diameter of 19.7 cm. Find the magnitude of the total force on the port (use ρseawater) = 1025 kg/m3).

## Homework Equations

P(total)= ρgh+P(atm)

A=[tex]\pi[/tex]R^2

## The Attempt at a Solution

I know that you need to find the total pressure on the bell. And then i think you have to subtract that total pressure from atmospheric pressure. this is what i have been doing and it is not working correctly. does anyone have any ideas?

Thanx!