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How many cubic feet of Hydrogen does it take to lift a 1 pound object, and is the relationship between cubic feet and pounds linear, in other words would it take 200x that amount to lift 200lbs?

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Welcome to Physics.SE. Our FAQ is quite down on this kind of introductory exercise. – dmckee♦ May 11 '12 at 21:59
BTW--I'd recommend that anyone who is feeling the need to write a little on the topic do it in the [buoyancy] tag wiki which could really use the work. And, if you don't have it yet, there is a badge for that. – dmckee♦ May 11 '12 at 22:01
hmm - closed because only relevant to small geographic area, like the planet earth? A specific moment in time like eternity and nobody else on the internet will find this of interest? I find that hard to believe. – alphablender May 11 '12 at 22:07
The available reasons for closing a question are fixed across all the StackExchange sites. Here on Physics.SE, "Too Localized" basically means that the question isn't really appropriate for the site for one of the reasons listed in the FAQ. In this case, it is too basic a problem. – Colin K May 11 '12 at 22:10
I personally wouldn't say "too basic", as some good questions are indeed "basic". I would categorize this as a "Do my homework"-type physics question. – tmac May 11 '12 at 22:44

closed as too localized by dmckee♦ May 11 '12 at 21:58

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.

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