Hello all, I'm new here. I stumbled on to your site today, found it absoloutly hillarious and couldn't resist joining in the fun.
I've decided to start by proving the oceans do weigh something through mathematics without contradicting the absurd theory that the ocean is in the ocean.
It's clear from reading this thread that RE believers are all willing to admit that the ocean can't be inside the ocean. It's like my computer being inside my computer which is inside my computer which is inside... well, you all get the idea. And it's equally clear that the FE believers are unwilling to accept this as fact, claiming that the oceans are in fact in a water medium.
Here's proof that even if you considder the oceans to be in a water medium that they still have percieved weight of m*g.
Firstly: weight due to gravity is m*g. This is well known.
percieved weight is the net force acting on an object which in the case of an object immersed in fluid is weight due to gravity - the Buoyancy force
the Buoyancy force is density*acceleration due to gravity*Volume of displaced liquid
or more simply acceleration due to gravity*mass of displaced liquid.
The key word here is DISPLACED.
This means that if 200kg of water is submerged in 1000kg of water the mass of the displaced liquid is 200kg.
In this case Bouyancy = 200*9.81 = weight due to gravity.
Therefore in this case, yes, the liquid has a percieved weight of 0. Reading this thread shows this is not disputed.
However, here's the part you're all over looking: "DISPLACED liquid"
If I submerge 200kg of water in 10kg of water the mass of the displaced liquid is NOT 200kg because there is only 10kg of water to be displaced. Therefore in this case Bouyancy = 10*9.81 and therefore the percieved weight is 200*9.81 - 10*9.81 = 190*9.81 Newtons.
In the case of the ocean being in the ocean. If we accept this silly idea then the percieved weight of the total ocean = m(ocean) * 9.81 - buoyancy force = m(ocean) * 9.81 - mass of displaced liquid * 9.81 = m(ocean) * 9.81 because if you considder the whole of the ocean to be your displacing object then there is 0 mass of water left in the medium (the ocean) to be displaced by it.
An example was previously given about placing a container full of water suspended by a scale in a container full of more water and reading 0 on the scale (provided you take into considderation the mass of the container). This is true.
However if you try and place a container full of water suspended by a scale into a container with less water then you will read a force on the scale.
It is therefore obvious from my above arguments that if the bounds of your medium are the same bounds of the displacing object then buoyancy is 0 because there is 0 mass left of the medium to be displaced.
Poll