Marble perpetual motion machine - GIF

[Altair]

Marble perpetual motion machine.




Previously:

Kinetic sand art table - GIF
Mechanical heart kinetic sculpture - GIF
Kinetic wind sculpture - GIF
Gravity Well kinetic sculpture - GIF
Water droplet kinetic sculpture - GIF

[rgsparber]

It looks like the last part is a video loop. Clearly, there is friction so is not a perpetual motion machine.

[CharlesWaugh]

No, not a loop.
Watch the ball just as it enters the hole each time.

There must be something adding energy because the return jump is higher than the drop height.

And the energy of the ball as it rebounds off of the backside of the 'cup' is rather high.

Nicely done illusion.

Any thoughts on how it's done?

[desbromilow]

apparently there is a battery hiding in there, but I don't know how they work unless there is a magnetic ring giving the bearing a "shove" down the chute to overcome friction effects. Copies of this appear online in the chinese websites (Aliexpress) for around $15 - those listings mention the batteries, but nothing about how they work.

[desbromilow]

apparently there is a battery hiding in there, but I don't know how they work unless there is a magnetic ring giving the bearing a "shove" down the chute to overcome friction effects. Copies of this appear online in the chinese websites (Aliexpress) for around $15 - those listings mention the batteries, but nothing about how they work.

thinking further about it, perhaps a small drive wheel inside the hole - similar to the mechanism you see for pitching baseballs - smaller and easily concealed inside the bottom of the cup.

[rgsparber]

With 3 wires supporting the platform, batteries and a circuit could be in the base and a coil around the hole.

[CharlesWaugh]

Here's the 'spoiler' video

And, it IS a spinning wheel.

[desbromilow]

Charles, thanks for finding that video!!! it's fun to try reverse engineering how things work, but another to finally know what is the correct answer eventually. - Thanks,
Des

[Duke_of_URL]

Whew, for a minute there I thought the First Law of Thermodynamics had finally been breached!
/s

[Frank S]

Whew, for a minute there I thought the First Law of Thermodynamics had finally been breached!
/s

No over unity is still safe for now, but I'm still waiting for people to finally figure out that all this hype about being able to fully charge an EV battery in minutes instead of hours is mostly hype, and is going to eventually cause brownouts in the already over taxed grid.