P.S. I have not claimed to be breaking conservation of momentum.
I did say that a battery was fitted.
Interesting.
I wasn't intending on entering it for any physics prize. You're missing the point here. If you are of a certain level of physics, you do not need me to help you with the explanation (or at least shouldn't). There are people, however, who may not be in that position. The formula is intended to help with the explanation and therefore must match it. Since I have used 'the body' in the explanation, so 'the body' is used in the formula. Any reasonable person would understand this. If the formula can help a single person (and I mean literally one person) to understand how the momentum transfers through the system then I am a happy man. However, on a technical basis, you are correct. Anyway, have you got anymore comments on your 'string theory'?P.S. I have not claimed to be breaking conservation of momentum.
5) Transfer of momentum as observed, device moves in the direction of the rotor arms.
If you turn the power off when the device has returned to its rest position at exactly the moment the tube magnet begins to accelerate down the tube when facing the body magnet, the device will not move, so there is no stored energy in the string at this point.
If I can return to the thrust bearing, a thrust bearing can only apply friction, it cannot operate as a spring.
I think the string is acting like a spring, storing up energy and releasing it and the earth is yielding up some angular momentum to the system through the torque that the string has.I totally agree with your comments on winding a string. We can all remember winding a swing when we were children and then letting it spin as it unwound. This is what Jim Davis is referring to but, of course, we need to wind to unwind.I will go through the video in detail :-1) The body is at rest and the nearest tube magnet has been pushed down the tube to allow for starting.2) Power is switched on, the rotor arms accelerate and the body counter-rotates, winding the string.3) Jerk cycle takes effect, resulting in no counter-rotation of the body.4) The string now unwinds, so the device swings back and forth (string winding and unwinding) until it returns to its rest position (i.e. string is not wound).5) Transfer of momentum as observed, device moves in the direction of the rotor arms.If you turn the power off when the device has returned to its rest position at exactly the moment the tube magnet begins to accelerate down the tube when facing the body magnet, the device will not move, so there is no stored energy in the string at this point.If I can return to the thrust bearing, a thrust bearing can only apply friction, it cannot operate as a spring. Have you considered suspending your device from two strings, parallel to each other and about a centimeter apart? If, after you turn your device on, the strings twist around each other, you will know that the stings are applying a torque when the device is turned off as they unwind.Thanks for the suggestion. I have referred to it in my earlier remarks.
We can now briefly look at the thrust bearing. In the jerk cycle, as the rotor arms accelerate, the body is unable to counter rotate because it is unable to overcome the friction of the thrust bearing. When the power is switched off momentum transfer takes place and the device moves in the direction as the rotor arms overcoming the same amount of friction.Therefore I feel it reasonable to conclude, that a force is acting on the body which cancels out the force applied to the body when the rotor arms accelerate.
All of the energy/momentum that the body requires is provided by the power supply.
the string is not wound when the power is switched off.