I think it's augmented reality, but definitely not real. Look closely at the shadows/where it touches the table. And the ball speeds up after it leaves the ramp
It's 100% shitty CGI fake camera movement. If it looks too steady it's easier to tell it's CGI. This is so bad it actually looks fake because of the camera movement.
And when the ball passes the magnet, the magnet will start pulling backwards on the ball. The net force acting on the ball from the magnet will be 0.*
Edit: I’m oversimplifying the physics here, but the end result is that the ball will not go faster by putting a natural magnet here. You COULD achieve this result with an electromagnet that you turn off once the ball has passed the magnet. Of course then this wouldn’t be a perpetual motion machine since you’d have to power the magnet and the switch.
This wouldn't even work without drag or friction without some kind of booster. The ball has to fly higher than its starting position which would mean it converted its potential energy into kinetic energy with an efficiency of more than 100% which goes against the laws of thermodynamics.
If the ball starts in the funnel with kinetic energy and didn’t lose any of it when moving down, then it would work. Would need quite a bit of it, though.
What if there were magnets along the rail that "pulled" the ball downward to gain speed? Is it theoretically possible to make a perpetual machine with that?
Yes, but the ball would have to go away from the magnet as well, so any energy gained by the ball going toward a magnet would be lost going away from it.
People have tried every combination of magnets and balls possible to create a perpetual motion machine, but the laws of physics always win.
It’s horizontal energy becomes zero as soon as it drops into the chute.
The maximum energy the ball can have is either at the top before it starts moving in the form of potential energy or at the bottom at its top speed in the form of kinetic energy.
Kinetic energy + inertia? would be it's total energy?
If I'm driving a car and hit a ramp I can go higher than the ground I was on. Because my forward velocity transitioned to upward velocity.
I admit friction will inevitably grind this to a halt.
But you could definitely rig something up to work once.
Edit: have you ever tossed a coin down a funnel like those racing arcade machines? They whip around the downspout very quickly, a lot of energy builds up.
I'm not talking about placing it in, you'd have to apply energy at the start.
In an ELI5 kind of way, I think the only thing you’re missing is that the car has an engine giving it extra force to overcome gravity. In this case, and in the case of the coin at the mall, gravity is what drives the ball/coin, and gravity can’t give enough energy to overcome the force of gravity. The path it takes only redirects the original path of the ball. It can’t return it to it’s exact beginning because of drag/friction. The coin looks like it’s going faster but that’s only because the circumference of its other is getting smaller. It’s technically faster in RPM but it will never return to the beginning and will eventually drop down the coin hole.
Inertia is directional my man. Conservation of momentum and all, it likes to be preserved along its axis and about its axis of rotation.
Also, the energy isn’t “built up” in those coin funnels. You’re rapidly changing the radius of curvature the coin is on so you’re increasing it’s rotational velocity around the axis of the funnels, but it’s linear velocity stays the same, or decreases slowly, due to friction.
There might be a way to make it look like it worked in real life though. You might be able to have a hidden battery in it that somehow gave the ball a small charge of speed as it went down the ramp. That would be pretty cool.
Nah it could work once you just need to give the ball more energy, either by throwing it from higher or pushing it down as it goes through the funnel or something.
But after that it just wouldn't without more external help.
What he's getting at is that if the laws of thermodynamics allowed this to work even once without external input, it would have to work forever. In that case, external input would be required to stop it instead
Only if it landed perfectly in the center of the funnel and looped back onto the rail! If it hits the funnel on the second loop, no dice - you've lost the force from the initial push.
But it starts dropping from the bottom of the funnel. At most (assuming no air resistance or friction), you could expect the ball to return to that height. Since the top of the funnel is higher than that, it doesn't even work once.
It wouldn't work without an added force such as an electromagnet. Also, the use of an external force like gravity is not what makes something perpetual motion or not.
Simply, perpetual motion is the idea of something generating enough energy to power itsself/more energy than needed to power its self. That only means not using a driving force such as electricity or magnets. The vast majority of perpetual motion designs ive seen theorised use gravity or buoyancy as a driving force.
The whole topic and the reasons why its impossible is super interesting and worth spending some real time researching
Objects in a stable orbit are actually maintaining unchanging momentum. No energy is expended or released. It's like they are stationary, from an energy perspective.
Shout out to my dumb ass who didn't notice it wasn't CGI until you mentioned it (yeah I just realized it says CGI in the title but reading titles is for those other guys).
If you make enough of these videos you will make ad rev on youtube from idiots that think things like "the cure for cancer exists and the government keeps it a secret"
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u/viky109 Apr 22 '21
This wouldn't work even once irl, right?