- #1
swampwiz
- 571
- 83
This item has caught my eye, and some of the comments by the customers complain about the kinesculpture stopping.
https://www.amazon.com/dp/B073G984Q7/?tag=pfamazon01-20
I am not sure about exactly how it works, but I would guess that the battery drive a coil in the base, and the arms have permanent magnets in them, with Lorentz forces as a result. Since this is a very slowly dissipating chaotic-dynamic system, I could see the potential energy reaching a point very close to maximum - which should be a "hill", and hence an inherently unstable point - but that the kinetic energy just happens to get very, very low, with the small amount of friction causing the hill to have a very shallow valley at the top, but one that is steep enough to be locally stable.
Perhaps these customers are complaining because they don't understand physics well enough?
https://www.amazon.com/dp/B073G984Q7/?tag=pfamazon01-20
I am not sure about exactly how it works, but I would guess that the battery drive a coil in the base, and the arms have permanent magnets in them, with Lorentz forces as a result. Since this is a very slowly dissipating chaotic-dynamic system, I could see the potential energy reaching a point very close to maximum - which should be a "hill", and hence an inherently unstable point - but that the kinetic energy just happens to get very, very low, with the small amount of friction causing the hill to have a very shallow valley at the top, but one that is steep enough to be locally stable.
Perhaps these customers are complaining because they don't understand physics well enough?