tommyhakinen
Nov5-08, 06:23 AM
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 m2. Assume density of sea water is 1030 kg/m3.
2. Relevant equations
P = Patm + 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 : Patm + ρgh = Pinternal + P2
then F = P2 * A.
is this approach right?
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 m2. Assume density of sea water is 1030 kg/m3.
2. Relevant equations
P = Patm + 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 : Patm + ρgh = Pinternal + P2
then F = P2 * A.
is this approach right?