Classic Rock Posted June 6, 2007 Share Posted June 6, 2007 I've just walked past a car covered in helium balloons on Barkers Pool (charity awareness fundraising thingy). It got me wondering, in a Brainiac kind of way, how many helium balloons it would take to lift a car from the ground and let it float away. Any scientists out there want to hazzard a guess? Link to comment Share on other sites More sharing options...
xircon Posted June 6, 2007 Share Posted June 6, 2007 http://www.newton.dep.anl.gov/askasci/phy99/phy99471.htm God I am soooo sad! simple answer .7kg of helium per KG of the car Link to comment Share on other sites More sharing options...
CorkerSWFC Posted June 6, 2007 Share Posted June 6, 2007 I've just walked past a car covered in helium balloons on Barkers Pool (charity awareness fundraising thingy). It got me wondering, in a Brainiac kind of way, how many helium balloons it would take to lift a car from the ground and let it float away. Any scientists out there want to hazzard a guess? Its funny you should say that, because i saw a lad on fargate yesterday with a brainiac t-shirt on, i thought it was in town somewhere at first. Unltil i realised its something he's bought from one of the mad shops on or around division street. Link to comment Share on other sites More sharing options...
Classic Rock Posted June 6, 2007 Author Share Posted June 6, 2007 http://www.newton.dep.anl.gov/askasci/phy99/phy99471.htm God I am soooo sad! simple answer .7kg of helium per KG of the car I think it's a Corsa, no idea how much it weighs. How much does a Corsa weigh? Link to comment Share on other sites More sharing options...
speeed Posted June 6, 2007 Share Posted June 6, 2007 Going by this website http://science.howstuffworks.com/helium2.htm it says a 1 foot diameter baloon volume 0.5 cubic m, has a lifting capacity of 14 g. That would mean to lift 1 kg you would need 71.428571. (1000g/14g (lift for balloon)) therefore to lift one ton you would need 71428.571 balloons or 71429 rounding up. So depends on the weight of the car now! Link to comment Share on other sites More sharing options...
cgksheff Posted June 6, 2007 Share Posted June 6, 2007 That page is forgetting the weight of the balloon. Say Corsa is about 1200 kg? You'll need something like 250,000 balloons. Link to comment Share on other sites More sharing options...
Classic Rock Posted June 6, 2007 Author Share Posted June 6, 2007 And would that just lift it a little bit, or would it float away? Link to comment Share on other sites More sharing options...
speeed Posted June 6, 2007 Share Posted June 6, 2007 And would that just lift it a little bit, or would it float away? The lift of a helium balloon depends on the density of the atmospeher around it, so it would only lift so high anyway as with just a single helium balloon. Link to comment Share on other sites More sharing options...
scarby Posted June 6, 2007 Share Posted June 6, 2007 What about the size of the balloon itself? Link to comment Share on other sites More sharing options...
the_rage Posted June 6, 2007 Share Posted June 6, 2007 people,people,people please stop this before it becomes any bigger and starts to invade you rlife. its onlt a siple question at the minute but what if it manifests itself into actual experiments. you wont be able to look at anything without wondering and guestimating the number of ballons it would take to lift it!!! hmmmm i wonder how muc h that toast weighs. how many ballons would that be. its a high air pressuse day today so iwould have to equate that into my estimations etc please stop before you get hurt Link to comment Share on other sites More sharing options...
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