whaty24 Posted May 21, 2006 Share Posted May 21, 2006 Hello, my name is karl and i am an 8th grader that needs help with a science project. I know this sounds corney , but i need to know how to contact a physicist. If you know a physicist that wouldn't mind helping that would be great. The project question is, Is the spin of a superball when bounced off the floor then against a wall affected when there is water present on the surface? I have already figured the answer to the question but i don't know why it is affected. Any help would be great i need information from a primary source. (Physist) Link to comment Share on other sites More sharing options...
tomgwyther Posted May 21, 2006 Share Posted May 21, 2006 The depth of water is importand, even if it's only very shallow. water is about 600 times more dense than air, as the ball hits the water there would be more friction generated thus slowing the spin of the ball. You could maybe try a few other fluids to see their effect on the ball. see if custard, fizzy drink or oil or somthing has a different effect to water, might be fun. Link to comment Share on other sites More sharing options...
Psycho Posted May 21, 2006 Share Posted May 21, 2006 It is due to the liquid given the surface more lubriation and therefore reducing the force of friction, and i'm sure there is some fancy equation but i don't know it. Link to comment Share on other sites More sharing options...
Kyrisch Posted May 21, 2006 Share Posted May 21, 2006 There are physicists here, if I'm not mistaken... That or people with enough experience in physics to answer your question more than adeptly. I apologize that I'm not one of them . Edit: whoa, you guys sure jumped on that one fast lol Link to comment Share on other sites More sharing options...
whaty24 Posted May 22, 2006 Author Share Posted May 22, 2006 THANK YOU ALL. Psycho, i had the same idea as u did but i would like to a registered physist so that way i kno its true but this might work. i'll ask me teacher. Link to comment Share on other sites More sharing options...
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