Question

vy does a ship dosnt sink whereas an iron ball sinks in water

Answer 1

for a body to float, it has to displace the water equal to it body weight.

Answer 2

that is a thing of density will igve a proper answer in a second its really interesting

Answer 3

http://en.wikipedia.org/wiki/Archimedes'_principle
someone noame Archimedes(AR-Kah-Mee-dees) made this principle of density, he basically made the principla of bouyancy

when you take the same mass and stretch it out, u get less density,
ex
if you take an iron ball 10 lb, it will sink and displace a certain ammount of fluid, but if u strch that metal out and make a boat it displaces less fluid, therefore floats
thats the general idea

Answer 4

because of buoyant force the water exerting against the ship... and that buoyant force is equal to the weight or the force the ship exerts on water.

Answer 5

yes thanks gracee for sumarizing it, my ex was a bit to long :D