Part V
Smokin
Joined: Jun 2006
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you bring up an interesting point. It is "assumed" that since it is a bed, it will be laying as a bed should lay...especially since a waterbed will not naturally sit on its end. After all, a waterbed is just a giant bag full of water. However, the fridge may still outweigh the bed, even if sitting on its end. Keep in mind the fridge sits on 4 small feet, like Jim mentioned.
Post Fiend
Joined: Feb 2007
Posts: 7,191
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From: Blairsville,Ga
Hotshot
Joined: Jan 2008
Posts: 13,144
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From: Rochdale MA
Hey Nick. Welcome to the science club.....
Post Fiend
Joined: Dec 2008
Posts: 7,649
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From: Wallingford, CT
I think we're underestimating the weight of water here. That's why I want to know the measurements of the bed.
Let's say we have a framework that weighs 0 and has no surface area that will keep the waterbed on end. If the waterbed holds 50 gallons of water that's 400 pounds. I honestly couldn't even begin to guess how much water is in a waterbed since the waterbed fad was before my time.
Evening, Nick. We're just talking about engineering things.
Let's say we have a framework that weighs 0 and has no surface area that will keep the waterbed on end. If the waterbed holds 50 gallons of water that's 400 pounds. I honestly couldn't even begin to guess how much water is in a waterbed since the waterbed fad was before my time.
Evening, Nick. We're just talking about engineering things.
Smokin
Joined: Jun 2006
Posts: 8,849
Likes: 0
I think we're underestimating the weight of water here. That's why I want to know the measurements of the bed.
Let's say we have a framework that weighs 0 and has no surface area that will keep the waterbed on end. If the waterbed holds 50 gallons of water that's 400 pounds. I honestly couldn't even begin to guess how much water is in a waterbed since the waterbed fad was before my time.
Evening, Nick. We're just talking about engineering things.
Let's say we have a framework that weighs 0 and has no surface area that will keep the waterbed on end. If the waterbed holds 50 gallons of water that's 400 pounds. I honestly couldn't even begin to guess how much water is in a waterbed since the waterbed fad was before my time.
Evening, Nick. We're just talking about engineering things.
Force/area = PSI.
Lets say the bed weighs 400 lbs. Lets say the end of the bed measures 60" wide and 10" tall. That's 600 square inches of surface area. Lets put that into the formula.
400/600 = .666 PSI.
Lets do the same for the fridge. Lets say the fridge weighs 400 lbs. Lets say the fridge has 4 feet, each of which is 2" x 2". Each foot is 4 square inches. 4 of those add up to 16 square inches. Lets put that into the formula.
400/16 = 25 PSI
I'm not a math person but I think those numbers are right.
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
I think we're underestimating the weight of water here. That's why I want to know the measurements of the bed.
Let's say we have a framework that weighs 0 and has no surface area that will keep the waterbed on end. If the waterbed holds 50 gallons of water that's 400 pounds. I honestly couldn't even begin to guess how much water is in a waterbed since the waterbed fad was before my time.
Evening, Nick. We're just talking about engineering things.
Let's say we have a framework that weighs 0 and has no surface area that will keep the waterbed on end. If the waterbed holds 50 gallons of water that's 400 pounds. I honestly couldn't even begin to guess how much water is in a waterbed since the waterbed fad was before my time.
Evening, Nick. We're just talking about engineering things.
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Postmaster
Joined: Sep 2008
Posts: 3,220
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From: VA
Anyone ever seing the image in science class or something talking about this...
There was an elephant standing on a platform and a woman with a high heeled shoe on and the pressure from just her heel was equal to the elephants weight spread out. I think it was something about either this or hydraulics.
I could just be not remembering this at all...
There was an elephant standing on a platform and a woman with a high heeled shoe on and the pressure from just her heel was equal to the elephants weight spread out. I think it was something about either this or hydraulics.
I could just be not remembering this at all...
Smokin
Joined: Jun 2006
Posts: 8,849
Likes: 0
There was an elephant standing on a platform and a woman with a high heeled shoe on and the pressure from just her heel was equal to the elephants weight spread out. I think it was something about either this or hydraulics.
I could just be not remembering this at all...
I could just be not remembering this at all...
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Smokin
Joined: Jun 2006
Posts: 8,849
Likes: 0
Fair enough. Lets cut the fridge's weight in half..and double the weight of the bed. If we use our formulas, the bed is still only at 1.3 PSI...the fridge is at 12.5 PSI.
Post Fiend
Joined: Dec 2008
Posts: 7,649
Likes: 2
From: Wallingford, CT
I understand what you mean, Jim.
Lisa: There's 144 square inches per square foot just so you know. 12 inches by 12 inches multiplied is 144.
Enough math, guys. I still haven't done my Geometry homework yet.
Lisa: There's 144 square inches per square foot just so you know. 12 inches by 12 inches multiplied is 144.
Enough math, guys. I still haven't done my Geometry homework yet.
Smokin
Joined: Jun 2006
Posts: 8,849
Likes: 0
Sorry guys. Enough math. I actually have a huge placement test tomorrow, a math/science/english placement test that I MUST pass. There isn't much studying I can do to prepare for it so it helps me to get into this mode of thinking.