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Originally Posted by javadog
We were talking about physics here. In physics, weight is defined using two inputs, mass and gravity. That’s it.
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I would say weight is one of the most misunderstood terms, as most people equate it with mass.
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I would argue with you, and tossing terms like "misunderstood" is a dangerous thing with physics.
If you accept the equivalency principle of ma=F=mg, then "weight" is the total sum of forces on an object to keep it un-accelerated in the local coordinate system. That would mean that the buoyancy force is absolutely part of it, and the weight of an object within water is less than the weight of that object outside of water...in fact, a floating object has zero weight.