I want to know how much work it is to move a certain volume of water at a certain depth.(adsbygoogle = window.adsbygoogle || []).push({});

For instance, take a submarine at 300 meters depth and I want to have the submarine extend out an arm from inside. the Arm is 1 meter by 1 meter by 5 meters long. Thus the volume of water displaced is 5 meters cubed. At 300 meters the pressure of water is about 3750 Kilopascals. Since we have the formulas:

p=f/a

W=f * d

the mass of the water is 5000kg and the force is then 5000*9.81 =49050 newtons?

but how do i incoporate the pressure at this depth? Certainly pushing this mass 1 meter over is easier on land then in such a high pressure?

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# Calculating work in a body of water

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