is boyency. so if you can move from one medium to the outher without using all the power that you created then it seems like you could get power as long as there was gravity and the same with the water.
It seems more like an enginering feat to do than a law aginst themal dynamics.
2006-11-01 15:16:49 · 6 answers · asked by John K 1 in Science & Mathematics ➔ Physics
Gravity is a field force created by the presence of mass in space-time. Consequently, two masses separated by some distance, r, will always have the potential to do work in the process of getting closer together. That is, the same amount of energy is required to separate the masses as is released by bringing them closer together.
So, you can get energy from the system as long as there is a distance between the two masses. However, in obtaining that "free energy," you've brought the masses closer together. If you want to restore the system to its original state, you'll have to supply the same amount of energy you've just extracted. This leaves you zero net energy gain.
Imagine a big lake at the edge of a cliff, and imagine that there is a waterfall over the cliff at one place. Now imagine that we put a paddle wheel at its base to catch the falling water. This will cause the wheel to spin, and we can hook this spinning wheel up to a generator to get free power. Sounds great, right?
It is...until the lake is drained. Once the lake is gone, there's no water to supply our wheel and we can't get anymore power from the system. What you're suggesting is that we should divert some of the power we've extracted from the system to pump water back up into the lake so that it can fall again, turn our paddle, and give us an infinite supply of energy.
The problem is, the energy required for us to put the water back is actually greater than the energy that we've gained in the first place. So in reality, we're not gaining anything but are instead constantly losing energy.
The same goes for buoyancy. In fact, buoyancy is a manifestation of gravity; the buoyant force on a mass in a liquid is equal to the weight of the fluid it has displaced. Again, energy is given off by letting a buoyant object rise, but the same amount is then required to bring it back to where it started. The whole cycle does not produce work (in fact, it requires we put more energy in than we get out).
2006-11-01 16:08:52 · answer #1 · answered by Rob S 3 · 0⤊ 0⤋
Consider this:
Your buoyancy is a certain upward force created by the weight of the displaced water. The lighter the object and the greater the displacement, the greater the upward force.
Move the object to air and let gravity pull it downward. The heavier the object, the greater the potential energy, the greater the downward force.
As you can see, your first concern is the selection of the object - for maximum efficiency, the characteristics of the object are mutually exclusive - literally opposite in needed characteristics for maximum buoyancy up and gravity effects down.
Next comes a real concern - how to get the object back on the bottom of the water without using energy by sinking it into the water. It seems easy to move from the top of the water to the air - but then there's that return trip - not so easy without some additional outside force.
You are definately correct in your assessment of gravity and boyency as being perpetual - and your idea is intriquing.
However, unless you can get that object back under the water for the return trip up, the idea is dead in the water (pun intended)
Don't give up - everyone told the Wright brothers that they were wasting their time, too.
As I understand your idea, the key to your theory is to figure out how to move the lower object to the bottom of the water without any additional energy to start the cycle over.
Good luck.
2006-11-01 15:51:08 · answer #2 · answered by LeAnne 7 · 0⤊ 0⤋
Newton first law of motion implies perpertual motion.
A body would move in space forever if it wouldnt encounter resistance to the motion. That is what that law indicates.
The push of gravity on a body indicates a weight.
The weight of a body is measured in newton which is a force.
2006-11-01 15:40:21 · answer #3 · answered by goring 6 · 0⤊ 0⤋
Its a question of genetics. Most don't believe in JESUS as a ramification of their genetic makeup. the children of the world or cain's offspring and descendants have no clue of the SPIRITUAL. However they are lead by the spiritual yet don't perceive. These are two fold the children of hell. THANK YOU YOUR servant david
2016-05-23 10:45:41 · answer #4 · answered by S 3 · 0⤊ 0⤋
Give it up, you're treading 2000 yr old ground here. People way smarter than you have tried this already and failed miserably.
You apparently failed 1st year physics, otherwise you'd know why this doesn't work.
2006-11-01 15:29:19 · answer #5 · answered by arbiter007 6 · 0⤊ 1⤋
Correct. The problem is that little word 'if'.
2006-11-01 15:28:06 · answer #6 · answered by Anonymous · 0⤊ 0⤋