I’m sitting in a boat in a pool. In the boat with me is a cannonball. What happens to the level of the pool if I take the cannonball out of the boat and drop it into the pool? Does the level increase, decrease or stay the same?

The pools level will decrease. it will do this because, though the cannon ball had weight, the boat is hollow and displaces more water due to its greater volume.

Posted by Chaz on 2003-05-03 09:28:43