Perpetual motion eludes us again.
Perpetual motion eludes us again.
49 comments
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Did you try flipping the magnet over? If you put the two north ends together they’ll repel instead of attract.
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The beauty is that you can make the mental gymnastics to make it work both ways.
If they are opposite, the magnet attracts the car which moves the magnet away creating infinite motion
If they are the same, the magnet is repelled by the car, moving it away, moving the car forward creating infinite motion
You can even do mental tricks to make the contraption go backwards: Opposites: car attacks magnet which moves the car backwards Same: magnet reppels the car which moves the contraption backwards
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By your though process shouldn’t the car be going backwards?
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I tried something like that when I was about ten.
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Because you need to put it on the back and have it repel the truck forward instead of attract it forward obviously
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It would work if the repulsion/attraction only went in 1 direction. But since it goes both ways, they just cancel out.
Conversely, the fan version of this idea (fan blowing into a sail) does actually work. But it's nowhere near as efficient as simply turning the fan away from the sail to push you the normal way.
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Well because there the whole system now becomes the ship+air/water molecules rather than just the ship + you use energy to work the fan which imparts that energy to the air/water molecules. In the end the air/water molecules literally get pushed behind so the rest of the system can move forward.
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What if u put the fan in the water?
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There's oxygen in water, so it could work
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You think it would work if one end is a magnet and the other ferrous metal? I'm pretty certain it wouldn't
Whatever happens there's no work done as the magnet and it's partner don't move relative to each other. There's force between them, but no movement.
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You think it would work if one end is a magnet and the other ferrous metal?
No, because the force of attraction is still working in both directions just not as strongly as it would with two magnets.
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Yeah, as long as no other energy is put into the system, nothing will happen. Since the two parts are statically attached to the same object, so no additional movement or energy means no effect on the overall object.
It is basically like putting two nails in a piece of wood and stretching a rubber band between them. Nothing will happen without additional steps
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Excellent! It is always nice to see people asking questions - the journey towards the answer should prove most enlightening! :-D
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The wire/metal holding it needs to be springy and bobbing back and forth to generate the momentum, duh.... Half-assed implementation I say.
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The magnet isn't strong enough.
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If you ever talk to someone confused by this, maybe ask them to lightly push the front magnet in the direction it's trying to go.
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I tried that, nothing happened to the picture. why???
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Huh, try putting it next to the phone
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“No srsly y isnt it?”
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Why would it? Think about it, would the two magnet gets closer if the wheels started rolling?
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Not with that attitude they won't.
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Need a bigger magnet.
Also, how do they work?
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they come from the ground so they have gravity in them
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Miracles
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I am pretty sure the other guy is talking nonsense and he kinda didn’t explain anything, its basically an atom with such a subatomic structure where there are more electrons on one side than the other, making that side more negative! The whole deposit is made up of atoms facing the same way!
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Oh boy, this is very incorrect, because it sounds like you are attempting to explain magnetism with electrostatic forces. Here is a basic model which separates the difference between the two:
- Electrostatic forces are caused by the electric field. Something produces an electric field simply by having an unbalanced charge. Positive attracts negative, negative repels negative, positive repels positive.
- Magnetic forces are caused by the magnetic field. Something produces a magnetic field by having an unbalanced charge AND is moving.
This is why when trying to explain how solid magnets work, we focus on the electrons because electrons are charged particles that are always moving. So they produce both an electric field (being charged) and a magnetic field (being a moving charged system).
Rhaedas is sorta correct. Any solid system has the capability of being a magnet, but this takes an incredible amount of physics work where iron is special. Iron's electrons are able to easily maintain a synchronous orbit with each other which results in magnetic forces being observable at a macroscopic scale (seeing iron magnets pull on each other). In most other materials, the electrons orbits are chaotic, so even though magnetic fields are still being produced by their electrons, the lack of order results in no magnetic force being observable on the macroscopic scale; but if you place this non-iron material within a very strong magnetic field, you may be able to align their electrons orbits so that it becomes magnetic on the macroscopic scale (like iron).
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When I was a kid I came up with this design during a long road trip. I spent the whole time thinking I was some kind of genius, because how didn't anyone else think of this before?
You can imagine my disappointment when I got home and created my prototype.
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Needs more magnets and some springs.
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Maybe it needs gas?
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This works in Kerbal Space Program
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need two separate vehicles and two magnets, one weaker then the other
so the weaker one will repell the other and it will kick forward moving the other forward and rinse and repeat at a sonic speed
thats gotta generate some kinda motion
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This is basically how a
rail cannoncoil gun works, just with electromagnets that can reverse their polarity.It's a powerful way to accelerate anything — I think it's most famously used in those types of metal roller coasters that start you at a flat-with-the-ground angle, and then just fuckin launch you up a ramp to 45° with electromagnets. The issue is that you need a fuckton of energy to do that.
What we need for true perpetual energy is to just capture that guy Blanka from Street Fighter.
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That's not how a railgun works, that's how a coilgun works. Railguns create a loop of electric current that flows into one "wire" (the rail), through the projectile into the other wire, and back down to the starting point again, this configuration creates a force that pushes the projectile down the rails
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What we need for true perpetual energy is to just capture that guy Blanka from Street Fighter.
Surely that dude has to eat a lot in order to produce so much energy, no? Or is it just all stored somewhere in his body?
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Equal AND opposite
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You could get something like this to generate thrust in theory, just not enough to move an object with this much mass and air resistance. Also all of the work is being done on the rod suspending the magnet. It's kind of similar to ionic propulsion.
49 comments
Young lady, in this house, we obey the laws of thermodynamics!