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#1 | |
Senior Member
Join Date: Jul 2006
Location: Fullerton
Posts: 1,361
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Quote:
Now, if you placed noodles UNDERNEATH the kayak instead of INSIDE, then the noodles would have net buoyancy due to their volume displacing the water, which weighs more per unit volume. The kayak would be lifted to the point that less water is displaced by the hull in the amount almost equal to the total volume of the noodle. The reason for putting the noodle inside your kayak for safety is, if the hull fills with water, the kayak hull is no longer displacing the water beyond the volume actually occupied by plastic. The noodle inside the hull takes over displacing a smaller volume of water than the hull, but enough to keep the kayak from heading to the bottom. think of it this way, if you are in a swimming pool and have a pool noodle, do you float higher when you hold the noodle over your head? No, because it is not displacing any water BUT it is contributing a small amount to the "assembly" of your body and the noodle. When you sit on the noodle it is submerged. The weight of the assembly has not changed, but WHAT is displacing the water HAS changed. Sorry for the long-winded answer, but this is a pretty common misconception and the answer is not necessarily intuitive. |
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#2 |
Large Member
Join Date: Jul 2012
Location: La Verne, CA
Posts: 1,011
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How many pool noodles do I need in my hull to make my kayak into a hovercraft?
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#3 | |
Fishing Patriot
Join Date: Dec 2013
Posts: 1,121
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Quote:
In regards to science, I'm still trying to figure out this whole flat vs globe earth ![]() Sent from my SM-G935V using Tapatalk
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#4 |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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the earth has to be flat, otherwise our kayaks would keep trying to slide to the bottom and we could never get back to shore. It's science dude
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you can't eat it if you release it |
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#5 | |
Fishing Patriot
Join Date: Dec 2013
Posts: 1,121
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Quote:
![]() ![]() Sent from my SM-G935V using Tapatalk
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#6 |
Senior Member
Join Date: Feb 2009
Location: SAN DIEGO
Posts: 1,086
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"The secret of life? one thing just one thing only. That's what you gotta figure out" curly |
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#7 | |
Senior Member
Join Date: Jul 2006
Location: Fullerton
Posts: 1,361
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Quote:
![]() ![]() ![]() ![]() I know, I know. But the question occasionally comes up and I did TRY to keep it brief but complete |
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