right , if helium doesnt creat lift, then why when i put helium in a baloon it rises? if i dont put helium in a baloon it doesnt rise? so how i figure it helium creats lift............
mark k ----- Original Message ----- From: "Tom Richardson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, June 23, 2002 11:50 PM Subject: Re: nitrogen filled tires > Helium does not create lift. Rather, the force on the helium molecules > (due to gravity) is smaller because it has a lower mass than air. Think > of holding a ball underwater. > > Substitue the mass of a vacuum (zero) into this equation: force = mass * > acceleration and you'll see what I mean. > > - Tom > > James Cox wrote: > > > Hum.. I don't know about that, sure that may hold true with no > > athmosphere but helium being lighter than air, creates lift, and thus > > less weight, even though the mass would be larger. > > > > (I got no idea how we got into this discussion on a Datsun forum!) > > > > James Cox > > > > > >> > >> Yes. A frame full of helium would have more mass than a frame under > >> complete vacuum, therefore gravity would exert a larger force on the > >> helium cos of one of Newton's laws, Force = mass * acceleration (ie even > >> though helium is lighter than air, it's still heavier than nothing) You > >> can't really use vacuum filled tyres though :) > >> > >> Aren't these digressions great? Who'd have thought there was a use for > >> high school physics > >> > >> - Tom > >> > > > > > > _________________________________________________________________ > > Join the world's largest e-mail service with MSN Hotmail. > > http://www.hotmail.com > > > > --membersozdat------------------------------------------------------- > > OZDAT Mailing List Please Note:- > > Send (un)subscribe requests to [EMAIL PROTECTED] > > Send submissions to [EMAIL PROTECTED] > > No unauthorised redistribution of this email > > http://www.ozdat.com/ozdatonline/index.htm > > http://www.ozdat.com/ozdatonline/listindex.html > > http://www.mail-archive.com/[email protected]/ > > --------------------------------------------------------------------- > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
