Buoyancy Demonstration #2

The work "released" when a float rises up in a tank is due to the heavier water "falling" under the float and displacing it upward. When the float is made to sink, by whatever clever method, it must PUSH THE EQUAL VOLUME OF WATER UP against the force of gravity. This takes work. How much? Exactly the same amount you got from the rising float.

It doesn't matter how clever the mechanism used to vary the buoyancy, or whether the system is designed to work in water, or in air, or in some other gas.

The basic principle is the same:
Gravity is a conservative field.
You get out, what you put in, minus losses.

Category:

Science & Technology

Tags:

• Buoyancy
• motor
• free
• energy
• perpetual
• motion
• fallacy

[basilenglish]

ok what if you could insert the object somehow into the bottom of the jar and and have it fall outside the jar, both ways it will produce power, the taller the jar, the more power generated, but also the higher the pressure will be at the bottom of the jar. The only way is to have a solar panel attached to a water pump which fills another tank above the main tank for night use, thereby reducibg the use of batteries

[TinselKoala]

Sure. When you figure out how to make your magic valve that will let an object in at the bottom of a tall column of water, without letting the water out, let me know.

Oh, and it has to work frictionlessly and without input of work, or you are back where you started from.

An "air lock"? Sure, it works one time. Now what, your airlock is now full of water.

[Grafschnitzel]

But if you would let the bottle fall down from the outside of the glass, through the air, and then find a way to put the bottle into the glass from the bottom? It'll float up again, and there you have your cylcus.

[TinselKoala]

And then find a way.

Try waving your wand and shouting "abracadabra", it might work, who knows.

[WhoDatSaints45]

Damn you penguin!!!!

[WhoDatSaints45]

The duck came to my house and murdered my family!!!

[adanieltorres]

@TinselKoala Well you may consider a capillary tube to create a column of water that has an open bottom... See thought experiment video at youtube /watch?v=MIdt63Vl4Xs

[RHEAD100]

Too many people ASS-U-ME Too much.

You are 100% correct IF we ASSUME that the bottle full of air MUST be forced to the bottom of the tank.

I say; fill the bottle with water and it will sink.When it is at the bottom fill it with some kind of gas and it will float to the top. That, as we all know, would take as much energy to pump the air down into the water as it wiil creat floating up.

THAT IS ASSUMEING that we are dumb enough to PUMP the Gas.

THERE IS a better way.

[True0Faith]

So , there is a relation between Buoyancy , Force and weight ( considered as the Displaced quantity )

[amandarandom89]

that still wouldn't work. Even if you had that magic valve, you'd still have to push the water up to get the object inside, spending as much energy as you get from it rising.

besides, if you've got magic, why bother :p

[basilenglish]

a real continuos supply would be easily done with solar panels, an MDI air car engine, and compressor with carbon fibre air tanks, at least at night you could still get power from extra tanks, no batteries

[basilenglish]

a catchment pool on the outside with 2 doors opening to create a pressure chamber, the higher the tower the more power generated for the same amount of water lost, ie that power pumps it back up again, the water pressure released could drive another turbine, couple it with fresnel lenses, solar panels, tesla turbines ,one could possibly create a good working source of power but its not perpetual