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Old 09-04-2006, 06:41 PM
futuredictatorkitty futuredictatorkitty is offline
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Default help...rubber ball movement

well. everybody know why two ships cant get two close while they're in the water. and well a good way to replicate the effect is to hang up two rubber balls and blow a stream of air through them. They will of course move closer together. well this is my idea...but i honestly cant think of a solid hypothesis...

i'm not even sure if this is a good idea. all i can really measure is the balls weight, density, distance they move, and velocity. and well i really want to do well

so..really can somebody just give me an idea on a hypothesis or just some random idea for a science project...this is like my last resort...
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Old 09-09-2006, 09:41 AM
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Lightbulb

hey hey hey that depends if the ships are moving or not if they are not then ofcorse there will be no wind to pullthem together but there are also some demonstrations that i have made one of them are small plastic ships put inside a room with no windows(so no wind) but the tho ships came together,
so it's the attraction force between them(the formula is (G*m1*m2)/d^2 where G is gravitational constant 6.672E-11 m is mass and d^2 is distance between squared)
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Old 09-09-2006, 08:39 PM
futuredictatorkitty futuredictatorkitty is offline
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Default !!!

thank you for the formula!
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