HELP !?! how do boats float?

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so, basic prinicple behind lfoating of boats archimdes principle says: object in fluid experiences upward force equal weight of fluid diplaced object.

so, example, boat weighs 1,000 pounds, sink inot water until displaces 1,000 pounds of water around it. , if displaces 1,000 pounds of water before submerges float!
have think shape of boat. not hard since of inside of boat air , average density of boat (including steel , air) lighter density of water. t

**if need more info go website. explains well!
http://science.howstuffworks.com/question254.htm

h-e-l-p !?!? have science project , question how boats float ? i'm not science geek can transfer easy me understand ?


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