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jepuskar

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Scuba Instructor
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Location
Chicago, IL
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Do you ever stop and think that 2lbs of weight in water is not really 2lbs of weight....I mean, it is 2lbs no matter what you do with it, unless its the kind with pellets and in them and you take some out....but anyway....the water will buoy some of that weight up.....so you really dont have 2lbs of weight, even though you do.

So when you calculate how much weight you need to get down, your number is based on actual weight of whatever you are using for weight. Of course this doesnt matter because even if you never even thought of your weights displacing water they do anyway and you calculate your weighting requirements based on your in water checks. Unless you come on here and ask for people to tell you what you need to wear before ever getting in the water to find out for yourself.

Now, its the larger weights that normally displace more water so they are in fact buoyed up more...so if I had the time and desire to figure out exactly how much this figure is I would but if you take 2lb lead weight (you people who only know metric need to figure this out yourselves) a 3lb weight, a 4 and a 5 all made by the same manufacturer you will find that the 2lb weight is only buoyed up a little, while the 5 is buoyed up more, but not enough to make it a 4 im guessing.

I got one...what if you made a weight that displaced an amount of water in pounds equal to the actual weight value. WOW, talk about messing with someone.. Look Dave, I got 50lbs on and I still cant sink. What if you took that same weight down to 33ft, 66ft, 99ft, and 132 ft....would it still displace the same amount of water and be nuetral or will minor fluctuations in the lead material under constant pressure of the water column cause various degrees of abnormalities in the material thus causing superficious catacombs of inevitable degrees??

What are your thoughts?
 
this is soooooooooo lame :D
where's Herb
 
I have stopped to think that 2lbs of weight is displaced by water and doesn't weigh a true 2 lbs underneath it. After that I moved on, man you got way into it.

If Dave's buddy can't sink with all the weight on what does it matter what might happen at 33, 66, or 99 ft.?

As for this
Jepuskar:
....would it still displace the same amount of water and be nuetral or will minor fluctuations in the lead material under constant pressure of the water column cause various degrees of abnormalities in the material thus causing superficious catacombs of inevitable degrees??

I'd have to say prolly
 
jepuskar:
What are your thoughts?
i think your avatar is funny looking


edit:
oh, about your topic!

well i think about how at depth im a size or 3 smaller depending on depth and how i wish i had the waist line at 28mtrs all the time..... the lead weight thing is a new thought i would ponder this weekend while im singing Barry Manilow and John Denver songs during our Aussie 48hr World Record Underwater Walk Attempt!
 
jepuskar:
Do you ever stop and think that 2lbs of weight in water is not really 2lbs of weight....I mean, it is 2lbs no matter what you do with it, unless its the kind with pellets and in them and you take some out....but anyway....the water will buoy some of that weight up.....so you really dont have 2lbs of weight, even though you do.

So when you calculate how much weight you need to get down, your number is based on actual weight of whatever you are using for weight. Of course this doesnt matter because even if you never even thought of your weights displacing water they do anyway and you calculate your weighting requirements based on your in water checks. Unless you come on here and ask for people to tell you what you need to wear before ever getting in the water to find out for yourself.

Now, its the larger weights that normally displace more water so they are in fact buoyed up more...so if I had the time and desire to figure out exactly how much this figure is I would but if you take 2lb lead weight (you people who only know metric need to figure this out yourselves) a 3lb weight, a 4 and a 5 all made by the same manufacturer you will find that the 2lb weight is only buoyed up a little, while the 5 is buoyed up more, but not enough to make it a 4 im guessing.

I got one...what if you made a weight that displaced an amount of water in pounds equal to the actual weight value. WOW, talk about messing with someone.. Look Dave, I got 50lbs on and I still cant sink. What if you took that same weight down to 33ft, 66ft, 99ft, and 132 ft....would it still displace the same amount of water and be nuetral or will minor fluctuations in the lead material under constant pressure of the water column cause various degrees of abnormalities in the material thus causing superficious catacombs of inevitable degrees??

What are your thoughts?

You forgot to take into account the variation of volume due to the variation of temperature under the thermocline which is certain to affect the buoyancy of the lead at different depth.
 
almitywife:
i think your avatar is funny looking

......................
 

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