Rock the boat

Originally posted by Ian68
Here is an explanation of Archimedes' principle designed for children:

http://www.factmonster.com/ce6/sci/A0804583.html

Maybe you will be able to understand it.

Nice one sugie, that's 2 wrong from 2.

Originally posted by Marsan
Nice one sugie, that's 2 wrong from 2.

What if the rock was huge but hollow..

Now the rock has only displaced it's wieght volume not it's mass volume and now the water would have to raise in level in accordance with the extra displacement of size....

so it depends on whether or not the rock is hollow or very light

Originally posted by iraqi insurgent
What if the rock was huge but hollow..

Now the rock has only displaced it's wieght volume not it's mass volume and now the water would have to raise in level in accordance with the extra displacement of size....

so it depends on whether or not the rock is hollow or very light

mtthw,

your right you did and i apologise for the lazy reading of your original post,

and again your right it was almost a good point, however if the rock was large and its hollow centre small the mass of the rock would still sink it (many ships cannon balls were hollow and all sank)

the pool level would still rise equally to the volume of the undisplaced hollow