Calculate Suction Pressure from Walls & Cups

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SUMMARY

This discussion focuses on calculating suction pressure applied to two pipes connected to suction cups. The initial conditions include a suction cup volume of 1m³, an area of 1m², and an initial pressure of 1 atm. The pipes have cross-sectional areas of 0.25m² and 0.50m², respectively. The calculation involves determining the pressure exerted by a constant force of 1N, factoring in the area of the pipes and the definition of pressure as force per unit area.

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bchohertz
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Hi, I had a question regarding pressure and suction.

Say you have 2 walls with a suction cup that is attached to each.
Initial volume of the cup is 1m^3, area attached is 1m^2
Initial pressure is 1 atm
Both walls have a hole of different sizes with a pipe leading out to atmosphere.
1 pipe is .25m area wide, other is .50m area wide.
How do I calculate how much suction pressure is being applied to each of these pipes?
assume the suction cups can infinantly exand out (think of an infinantly long piston), constant force of 1N pulling them out. Assume no friction, etc.

Thank you!

l
l
l------l
hole -----> l_____ ---> 1N
l l
l------l
l
l



l
l
l------l
HOLE -----> l_____ ---> 1N
-----> l
l------l
l
l
 
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Pressure is force per unit area. First calculate the cross-sectional area of the pipes.
 

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