Mathematical Analysis of an Ideal ZED

[Magluvin]

Buoyancy is the acceleration due to gravity restricted to the fluid states of matter.   Would you like to spin again?

Where is the acceleration in a boat floating on a flat lake? It must be really slow. Actually, Im not much interested in waiting for the boat to accelerate.    I dont have time for that.

Again, you are dodging the question. Show me the quote from Wayne that he states that he can turn 'gravity' on and off.         

Master of the universe cant back up his own statements.  Was it just sarcasm?    Astigmatism?? Maybe you can dig that quote up for tomorrow, just to give you some time to get it together.    No pressure. lol

Ok, time to sleep.  Night

Mags

[Magluvin]

There is an easy way to control buoyancy, and that is by controlling the volume of the thing that is displacing the water.

Umm, like a submarine??   

Night T

Mags

[TinselKoala]

You have been shown the quote. Buoyancy is gravity underwater, buoyancy is gravity misspelled, the only way to turn buoyancy on and off is to turn gravity on and off since they are THE SAME FORCE. When we see it operating out in space or between dry objects we say oh, look that is an effect of gravity. When it happens underwater we say oh, look, buoyancy. But it is the same force. The presence of the water just partitions that same force so that it is acting on the displaced water, and the displacer itself.

[TinselKoala]

Umm, like a submarine??   

Night T

Mags

A submarine has tanks that are opened from within the boat, and it takes time to fill those tanks. This does not result in a "volume change" as much as it results in a "weight change". The sealed volume of the boat remains the same, but its weight is increased so it sinks and guess what, it is GRAVITY that sinks it. The Cartesian diver is operated by Pressure Changes coming from Outside, and the Diver responds instantly to those changes because its Volume changes so that it displaces more or less water, but its weight remains the same. Again, it is Gravity that makes the diver descend AND rise.

[MarkE]

Where is the acceleration in a boat floating on a flat lake? It must be really slow. Actually, Im not much interested in waiting for the boat to accelerate.    I dont have time for that.

Again, you are dodging the question. Show me the quote from Wayne that he states that he can turn 'gravity' on and off.         

Master of the universe cant back up his own statements.  Was it just sarcasm?    Astigmatism?? Maybe you can dig that quote up for tomorrow, just to give you some time to get it together.    No pressure. lol

Ok, time to sleep.  Night

Mags

No Mags I am afraid that it is you who is a little slow.  Just as the mass of the boat is acted upon by the acceleration due to gravity so is the equivalent mass of displaced fluid.  Maybe you worry that the acceleration due to gravity is going to pull you through your bed as you sleep tonight.  Thankfully for you there is Newton's Third Law to keep you from vanishing from under your covers to a fiery doom at the earth's center.

I am glad that you happily celebrate your deliberate ignorance.