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tyre pressure
allycat
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Posted: Friday, March 03, 2006 - 01:35 AM UTC
We was having a rather rambling discussion at work yesterday and it flowed into this question:

If you inflate a tyre with 5bar of pressure (for arguments sake), does it weigh more than an uninflated tyre?

There would be 5 times the ammount of air in the inflated tyre. Air has to weigh something. doesn't it?
Tom
AJLaFleche
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Posted: Friday, March 03, 2006 - 02:45 AM UTC
It would have to since you're adding matter, air, to a closed system. If you were to add a component gas of regular air, you would lighten the tire. I'm not sure you're adding five times the amount ot increase the pressure. A smaller volume tire will increase in pressure per square inch or cm faster than a large volume tire.
allycat
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Posted: Friday, March 03, 2006 - 12:58 PM UTC
Those were my thoughts as well Al. Just some of my work colleagues didn't agree.
Tom
Grumpyoldman
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Posted: Friday, March 03, 2006 - 05:32 PM UTC
Easy enough to check.....
deflate a tire weigh it, inflate weight it....
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