There's static weight, and there's moving inertial weight, or mass. Will the helium reduce the energy required to overcome the inertia encountered when running, or just the dead weight? Maybe a real syantist can figure it out.
There's static weight, and there's moving inertial weight, or mass. Will the helium reduce the energy required to overcome the inertia encountered when running, or just the dead weight? Maybe a real syantist can figure it out.
It takes 1 liter of helium to lift one gram of weight, so a 133 pound runner would need about 60,000 liters of helium to get airborne and maybe half that to run with a very light footfall. You'd have a really huge pair of shoes. Of course, you could start with running shoes, switch to your helium shoes and float to the finish, then put your running shoes back on and claim a PR.
If they put helium in shoes they will sound funny.
I can't figure out why they never put helium in a blow-up sex doll to make her fly.
When my wife weighs herself on the scale, I always tell her to try the "helium balloon under the bathrobe" trick like Garfield the cat used to do. She still laughs!
HeMan wrote:
Why don't they put helium in shoes to make them lighter?
Because helium is running out.
http://phys.org/news/2013-09-congress-avert-helium-shortage.htmlSo I guess we'd have to switch to hydrogen. If someone followed GoatZenHeimer's advice and put it in a blowup doll, then you should smoke after having it on with your date.
Damn. I meant to type you shouldn't smoke..., oh nevermind.
ManHe wrote:
Because a perfect vacuum, which only exists in your head, is lighter and weighs nothing.
a vacuum isn't lighter than helium in earth's atmosphere. helium creates buoyancy and a vacuum does not.
An object having a complete absence of air would definitely be lighter than helium or the surrounding air.
http://www.thenakedscientists.com/HTML/questions/question/2659/
you have two shoes, both have a mass of S
the mass of helium is H
S+H > S
adding helium to a shoe would make it heavier
your welcome
why not breathe from a helium tank oh em gee
Or how about some antimatter discharges in the shoes to propel you forward. Just don't use too much or you might cut the Earth in half
A steel hollow sphere would float better with a vacuum inside than with helium or any gas, but only if it is rigid enough to not collapse from the net external pressure of 14.7 psi.
The savings on structural mass in a container filled with a slightly pressurized but low mass gas (like a helium balloon) is a much bigger factor than the difference in mass between said low pressure gas and a vacuum.
But of course a shoe cannot be as flimsy as a balloon, so for that case the vacuum may be better than helium. Except for the fact that a vacuum would be harder to maintain than a pocket of light gas.
If you put an airplane full of helium on a treadmill, will it take off?
not impressed wrote:
Not only is grox' post terribly boring and self evident (unless you're an airhead of course), it's also plain wrong in that it should require a huge volume of helium. Just look at Converse Helium.
We all know you changed handles so you could try and make yourself look less like idiotic once nobody followed your drift. It's not working.
science wrote:
ManHe wrote:Because a perfect vacuum, which only exists in your head, is lighter and weighs nothing.
a vacuum isn\'t lighter than helium in earth\'s atmosphere. helium creates buoyancy and a vacuum does not.
On here, I never know if someone is trolling, or just uneducated. So, this time, I assume the latter, and tell you it is wrong.
Mass of 1l of perfect vacuum: 0g
Mass of 1l of Helium at standard atmospheric pressure: 0.176g
Mass of 1l of air (mostly nitrogen) at standard atmospheric pressure: 1.25g
Of course, a vacuum creates buoyancy, and more so than helium. The container for the vacuum is likely to negate the buoyancy, but that\'s a different question.
The above figures also show how much weight a helium-filled camelbak can save you.
The earth's helium supply is running out, and it is not a renewable resource. Did you realize that the US has a strategic helium reserve? It's true.
http://en.wikipedia.org/wiki/National_Helium_Reserve
The government doesn't WANT people to use helium. Most likely Bush and Busch lite (Obama-not-an-American) instructed the US patent office to not patent shoes incorporating helium in their construction. Certainly it would be advantageous to have a nice, light shoe. It may even level the playing field between black and white athletes, negating the advantage of black's more slender, sinewy lower legs.
science wrote:
ManHe wrote:Because a perfect vacuum, which only exists in your head, is lighter and weighs nothing.
a vacuum isn't lighter than helium in earth's atmosphere. helium creates buoyancy and a vacuum does not.
Epic Fail.
The only perfect vacuum is the one inside your head, science.
Logical progression wrote:
Except for the fact that a vacuum would be harder to maintain than a pocket of light gas.
Logical explanation. I have thought of this.
Plus why not have a very thin lining of helium or a vacuum in a swim suit. It could be made to about the same thickness as now.
Is this against international swim rules to use such a suit?