Quote:
Originally Posted by Skunksmash
Well no, but it is lighter than air. So you'd gain the difference in weight of 44psi of helium, vs 44 psi of air. Whatever that number is.
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Right. But the mass of the tire/wheel assembly would so overwhelm the difference in mass between helium and air as to make it not worth mentioning. So I didn't mention it.
We call this "directionally correct but not measureable".
Additionally, the polar moment of inertia of the tire/wheel assembly would be unaffected. Polar moment of intertia of the tire/wheel assembly is probably even more important than static mass.
K