(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A submersible with internal pressure of 1 atmosphere is at a depth of 30 meter below the surface of the ocean. At this depth, what is the upward force required to open a hatch of area 0.75 m^{2}. Assume density of sea water is 1030 kg/m^{3}.

2. Relevant equations

P = P_{atm}+ ρgh

F = P*A

3. The attempt at a solution

Do I have to add the atmospheric pressure on the surface of the ocean? I have this equation : P_{atm}+ ρgh = P_{internal}+ P_{2}

then F = P_{2}* A.

is this approach right?

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# Homework Help: Pressure Problem

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