For Fluid Mechanics How Do You Determine If Something Is Stable?
Posted by admin on November 27, 2009 under Fluid Mechanics | 
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The meta center most be higher than the center of gravity, correct?
Does the center of gravity need to be above the center of buoyancy as well?
jeremiah said,
I do not understand this term “meta center”.
Drawing a simple freebody diagram will give you the fastest explanation. You must have your CoG below your CoB so that when you start to tip to one side, the moment is self righting and resists the direction it is turning it. If the buoyancy force was acting below the center of gravity it will push upwards on the far side of a turn causing the object to capsize faster.
If “meta center” means center of volume then the answer is indeterminable without a density; in which case it would turn back into center of gravity vs center of buoyancy forces.
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