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If I've got a blimp inflated to neutral buoyancy and I hang a small
mass from it, what will the acceleration of the blimp be immediately
after I attach the mass?
Question 1: Of course Pascal's Principle says that air pressure will
distribute itself equally on all sides.
Question 2: Flow through a vicious fluid is typically modeled with a
term which rises as a function of the square of the velocity.
If it use the mass of the displaced fluid in the calculation above,
am I already accounting for some of the "drag" force which is
normally accounted for in this velocity squared term?