Just as Archimedes said, the added weight of the quarter in question will cause an increase in the force of gravity. This will push the object lower in the water and the underwater volume of the object will increase, thus generating an increase in the force of buoyancy. The force of buoyancy and the force of gravity will come back into a state of equilibrium and the object, quarter and all, will now sit lower in the water. This interplay between gravity and buoyancy would continue until the object either sinks or, if the change is in the opposite direction, simply floats away.
Gotta love Archimedes! |
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