Bouyancy - throwing rock overboard

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When a rock is in a boat, it displaces a volume of water equal to the weight of the rock, causing the water level to rise. When the rock is thrown overboard, it displaces water equal to its own volume, which is less than the volume displaced when it was in the boat if the rock is denser than water. Consequently, the water level will actually go down after the rock is thrown overboard. This can be explained using Archimedes' principle, which states that the buoyant force on an object is equal to the weight of the fluid it displaces. Understanding these principles clarifies the relationship between buoyancy and water displacement.
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k in my advanced physics class 32S we are doing a project on buoyancy, one of the questions we have to answer is if you go out in a pool in a boat with a rock in it, then you throw the rock over board will the water level go up/down/stay the same. I am pretty sure that the water level will go up but do not know how to explain this, any help?

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Welcome to the Forums Crusader,

For future reference there are Homework forums dedicated to answering such questions.

With respect to your question, it may be useful to consider Archimedes principle...
 
sry didnt read the forum rules, my bad, no one post here anymmore
 
think correctly about arquimedes principle as hootenanny stated. are you sure it will go up?
 

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