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11-20-2006, 12:05 AM
| #1 |
| Pebble Pounder Join Date: Sep 2006 Location: SW Charlotte
Posts: 137
|  i guess this is a physics question
so what makes something float/bouyant? is it the area that it takes up? can u make someting smaller but pressureize it to have the same effect? example say a 2 liter bottle with the top on no pressure. VS 12oz bottle with 64oz worth of air. are they equaly bouyant? or "is there no replacement for displacement"? |
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11-20-2006, 12:33 AM
| #2 |
| I wanna be Dave Join Date: May 2006 Location: Arlington, VA
Posts: 3,377
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anything will float as long as it weighs less than the volume of water id displaces.......i think
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11-20-2006, 12:53 AM
| #3 |
| 06 Super National Champ   Join Date: Jun 2004 Location: Stark Industries Bar and Grill
Posts: 11,361
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11-20-2006, 03:41 AM
| #4 |
| I wanna be Dave Join Date: Nov 2005 Location: Crawler practice!
Posts: 2,104
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anything floats if it has a volume less then one witch is a lot and uh there is no replacement for displacement  |
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11-20-2006, 05:00 AM
| #5 | |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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11-20-2006, 05:43 AM
| #6 | |
| Rock Crawler  Join Date: May 2006 Location: Burrillville, RI
Posts: 778
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11-20-2006, 08:41 AM
| #7 | |
| Rock Crawler  Join Date: Jan 2004 Location: Round Rock, TX
Posts: 597
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11-20-2006, 08:46 AM
| #8 | |
| Rock Stacker Join Date: Sep 2004 Location: Spanaway,WA
Posts: 70
| Quote:
So are you saying that a tire filled with air would weigh more than a same sized tire without air in it? lol | |
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11-20-2006, 09:03 AM
| #9 |
| RCC Addict Join Date: May 2006 Location: In England, looking for the threadlock...
Posts: 1,150
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Yup, but the second one wouldn't float. Air has a weight, too.
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11-20-2006, 09:08 AM
| #10 |
| Pebble Pounder Join Date: Sep 2006 Location: SW Charlotte
Posts: 137
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i understand why it floats and u guys are right.... but no one has gotten what i'm asking i dont think.... lets say u take a couple 2 liters.... first just has the top on it and duh it floats second has lets say 50psi in it and duh it floats assume we attach "X" amount of weight to each bottle neck... will both sink under the same amount or will the pressurized bottle stay afloat while the regular bottle sinks under the same weight?  Last edited by roadblock; 11-20-2006 at 09:19 AM. |
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11-20-2006, 09:34 AM
| #11 |
| I wanna be Dave Join Date: Feb 2004 Location: Columbia Gorge
Posts: 5,512
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Why does some of my poo sink while some floats? I have samples....
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11-20-2006, 09:38 AM
| #12 |
| Pebble Pounder Join Date: Sep 2006 Location: SW Charlotte
Posts: 137
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density of the poo lol
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11-20-2006, 09:38 AM
| #13 | |
| Rock Crawler Join Date: Sep 2004 Location: a place of settlement, activity, or residence.
Posts: 842
| Quote:
Does that have anything to do with the amount of peanuts contained in the poo? | |
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11-20-2006, 09:55 AM
| #14 |
| I wanna be Dave Join Date: May 2006 Location: Arlington, VA
Posts: 3,377
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i would guess the 2 liter with 50psi will sink faster being that air has weight, but then the higher volume of air might keep it afloat, beets me. sounds like a good day for an air compressor, some empty bottles, a couple of weights and a pond.....now get busy!
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11-20-2006, 10:01 AM
| #15 | ||
| I wanna be Dave Join Date: Feb 2004 Location: Columbia Gorge
Posts: 5,512
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Quote:
No nuts for me. I think the issue of not being able to handle dairy products very well causes most of my floatation issues. | ||
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11-20-2006, 10:13 AM
| #16 |
| Pebble Pounder Join Date: Sep 2006 Location: SW Charlotte
Posts: 137
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well grab urself a floater and a sinker and squeeze them and feel the difference in consistency, u could even try mixing the 2 and see if it would still float or sink or possibly hang in limbo in the bowl.... just wash up after ur lil experiment  |
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11-20-2006, 10:27 AM
| #17 |
| owner, Holmes Hobbies LLC  Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Assuming the 2 liter could hold its shape under 0psi and the pressure of the water, it will be float more. If the container collapses the water displacement changes. Ever taken a large bouncy ball to the bottom of a pool? It is really hard to pull it under, but once you hit about 10 feet under it collapses and will stay down until brought back up. |
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11-20-2006, 10:40 AM
| #18 |
| Rock Crawler Join Date: May 2006 Location: Burrillville, RI
Posts: 778
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JRH is right... you have to assume that the 2L bottles stay the same shape and size... if they do...the one with the least amount of air floats best...
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11-20-2006, 10:46 AM
| #19 | |
| Rock Stacker Join Date: Sep 2006 Location: U.S.
Posts: 68
| Quote:
here's an example, take an empty propane tank and a full one, which one do you think will float with more weight tied onto it? :-P andy b. | |
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11-20-2006, 11:09 AM
| #20 | |
| RCC Addict Join Date: Sep 2005 Location: ...Here & There
Posts: 1,590
| Quote:
So how much does air weigh? Man... All this air around me, is weighing me down...  | |
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