Why does Archimedes' Principle apply to icebergs?

Question

Since 90% of icebergs are under water, there's 10% sticking out above the water. the 90% of the iceberg displaces the water, but what about the 10% when it melts?

Answer 1

When the berg melts, it still floats. It melts off the top and from underwater, both.

In the end, as mass slides off, it always keeps about 90% of its mass underwater and 10% out.

Watch a single ice cube melt in a glass of water ot tea - there's always a small part of it out of the water. There is a smaller % sticking out for tap water than sea water (only about 5% instead fo 10%) - because seawater is denser than tapwater (by about 5%).

If you want to check this - get 2 large classes of water. Dissolve as much salt as you can into one glass. Plop an ice cube into each glas - and see how much higher the cube floats in the salty water.

(Don't do this with a carbonated drink - the fizz adds a complicating element not found with icebergs.

Answer 2

I think you need to think this through a little more.