glass sinks forum

If you carefully immerse a glass bottoms up, it may stay thus ...

Puddin Pants , Friday, 13th of August 2010 01:59:13 PM

''If you carefully immerse a glass bottoms up, it may stay thus, as it will 
Puddin Pants
displace an amount of water weighing as much as the glass itself weighs. A 
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heavier metal tumbler might stay in this position, even below the water 
Joined: Sunday, 9th of May 2010, 00:26:20
level, without sinking to the bottom''
can you explain it somehow 
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simpler for me to understand ??
 
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Arsonist , Saturday, 14th of August 2010 12:20:19 AM

the glass will only push down on the water the weight it has to  
Arsonist
push down with, the only force the cup is applying is gravity. the air in  
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the tumbler will keep it from falling all the way to the bottom  
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