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Q:

Do things get lighter in water?

A:

When objects are placed in water, their mass does not change. They seem to feel lighter, though, because of buoyancy.

 

Archemedes's principle states that the force pushing on an object under water, is equal to the mass of the water it has pushed out of the way. So things apear lighter because the water is actually helping to push it up.

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Posted on November 28, 2014 at 11:53 am
Categories:
Gravity & Air
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