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InvisibleBrainiac
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How much do you weigh in water
    #10275061 - 05/02/09 10:00 PM (8 years, 11 months ago)

Say a 200lb man...


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InvisibleDoc_T
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Re: How much do you weigh in water [Re: Brainiac]
    #10275078 - 05/02/09 10:05 PM (8 years, 11 months ago)

Not much, you're mostly water anyway.
Way back when I was a Scout* we had to get a ten-pound brick off the bottom of a pool, they said that's about what a person weighs.

*Long, long ago in a galaxy far, far away.


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InvisibleDieCommie

Registered: 12/11/03
Posts: 29,258
Re: How much do you weigh in water [Re: Brainiac]
    #10275397 - 05/02/09 11:26 PM (8 years, 11 months ago)

Quote:

Brainiac said:
Say a 200lb man...




Depends on how much water he displaces.  Find out his volume, then take the weight of that volume of water and subtract it from 200. 

The weight of the water you displace is how much less you weigh.


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OfflineChuangTzu
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Re: How much do you weigh in water [Re: Doc_T]
    #10276670 - 05/03/09 05:11 AM (8 years, 11 months ago)

Quote:

Doc_T said:
Way back when I was a Scout* we had to get a ten-pound brick off the bottom of a pool, they said that's about what a person weighs.





Not if the pool has water in it... =]


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Offlinezouden
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Re: How much do you weigh in water [Re: DieCommie]
    #10276734 - 05/03/09 05:44 AM (8 years, 11 months ago)

I think you don't even need to consider the displacement. It's simply a matter of working out your density compared to water, and multiplying that by your weight. So a 100lb person that's 10% more dense than water would have a weight of 10lb.

Someone with the same density as water would have zero weight, ie, they are neutrally buoyant.

So what's the actual density of a person? According to this article, it's between 1.10 (lean) and 1.05 (obese). Average for a health male appears to be around 1.08, or 8%.

A health 200lb male would therefore weigh 16lb in water. Much less if it's salt water.


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InvisibleLe_Canard
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Re: How much do you weigh in water [Re: zouden]
    #10276834 - 05/03/09 06:58 AM (8 years, 11 months ago)

Actually, a guy is approximently 60-70% water, so that'd be around 125 lbs of water in a healthy 200lb guy.


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Offlinezouden
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Re: How much do you weigh in water [Re: Le_Canard]
    #10276904 - 05/03/09 07:52 AM (8 years, 11 months ago)

Yeah but the other 30-40% is material that has a pretty similar density to water anyway, so the overall density of a person is 1.08 times that of water.


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I know... that just the smallest
                                                part of the world belongs to me
You know... I'm not a blind man
                                                    but truth is the hardest thing to see


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OfflineSeussA
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Re: How much do you weigh in water [Re: Brainiac]
    #10278073 - 05/03/09 02:40 PM (8 years, 11 months ago)

> How much do you weigh in water

Salt water or fresh water?  You weight less in salt water than fresh water.


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