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Author Topic: Magnets, motion and measurement  (Read 75418 times)

Offline Floor

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Re: Magnets, motion and measurement
« Reply #450 on: January 13, 2020, 07:14:40 PM »
Preparations for the next magnet interactions measurement set


                     floor

Free Energy | searching for free energy and discussing free energy

Re: Magnets, motion and measurement
« Reply #450 on: January 13, 2020, 07:14:40 PM »

Offline Floor

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Re: Magnets, motion and measurement
« Reply #451 on: January 13, 2020, 07:20:45 PM »
Latest revisions of  two PDF files.

They help to answer the questions ...

what magnitude of force increments to use
                      and
how many measurements to make

when measuring the work / energy present in magnet interactions.

Online norman6538

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Re: Magnets, motion and measurement
« Reply #452 on: January 13, 2020, 09:07:01 PM »
WOW Floor. Very impressed and very anxious for the resulting numbers.
Norman

Free Energy | searching for free energy and discussing free energy

Re: Magnets, motion and measurement
« Reply #452 on: January 13, 2020, 09:07:01 PM »
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Offline ayeaye

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Re: Magnets, motion and measurement
« Reply #453 on: January 15, 2020, 02:07:33 PM »
Floor,

Please add to your paper, if you measure force with a pulley and weight, there are two forces that can be measured at any point. One corresponds to the minimum weight with which the weight still doesn't go up, and the other to the maximum weight with which the weight still doesn't go down. The real force is the average of these two forces, and the static friction of everything, including the pulley, is the half of the difference between these forces.

This is not my idea, i think it is known already from ancient times. Like whenever one uses some balancing scales that are not perfect, and have some friction.


Offline Floor

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Re: Magnets, motion and measurement
« Reply #454 on: January 15, 2020, 08:52:00 PM »
Floor,

The real force is the average of these two forces, and the static friction of everything, including the pulley, is the half
of the difference between these forces.


Thank you eyeeye, good input.

This is already  my standard practice when doing measurements.  However, when measuring in the higher force area
of the curve I find it makes too minor of a difference to do so.   

1. I move the sliding unit BACKWARD (against the weight) a short distance from where it seems to have reached equilibrium between the weight and the magnetic force and then re-release it.

2. Then I move the sliding unit FORWARD (against the magnetic force) a short distance from where it seems to have reached  equilibrium between the weight and the magnetic force and then re-release it.

Although I find that if makes little or no measurable difference in the higher force range, it typically results in an average which is derived from +- 1 degree to as much as +- 2 degrees in the lower force ranges  ( "lower force range" is  <=  25 grams).

                 best wishes
                      floor

Free Energy | searching for free energy and discussing free energy

Re: Magnets, motion and measurement
« Reply #454 on: January 15, 2020, 08:52:00 PM »
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Offline Floor

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Re: Magnets, motion and measurement
« Reply #455 on: January 21, 2020, 07:45:42 PM »


                             https://www.youtube.com/watch?v=zWld721Wk-Q

                         floor

Online norman6538

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Re: Magnets, motion and measurement
« Reply #456 on: January 21, 2020, 11:06:01 PM »
Floor, the youtube is so out of character that I suspect that you got hacked.

I have recovered a bit but my wife was back in the hospital for 5 days and now things have settled down enough to get a few hours back at the bench. So if that keeps up I should have some test results in a few days. I am waiting for the shoe glue to dry because some times hot glue to metal lets go but shoe glue really holds well. I'm trying to get power from repelling magnets by extracting a piece of metal between them releasing the repel work out. Now its up to the measurements...

Norman

Free Energy | searching for free energy and discussing free energy

Re: Magnets, motion and measurement
« Reply #456 on: January 21, 2020, 11:06:01 PM »
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Offline citfta

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Re: Magnets, motion and measurement
« Reply #457 on: Today at 12:48:49 PM »
Hi Norman,


I am not familiar with shoe glue but I have found two glues that seem to work well for my projects.  The first is Locktite GO 2.  It is heat resistant and waterproof and very strong.  I have not been able to get anything apart I have glued with it.  Only use it if you are sure you don't want to ever take apart again whatever you glue.  I have destroyed several magnets I glued with it when I tried to take them apart to reuse them.


The second glue I use is Goop.  It makes a pretty strong glue joint for holding things in place.  It is hard to pull straight apart but a strong twisting action will allow it to come apart.  Also the residue is like rubber cement and can be rubbed off whatever it is on.  It also stays somewhat pliable after drying so is good for projects where you might need a little flexibility.


Glad to hear you are on the mend.  Hope your wife is soon back to normal also.


Take care,
Carroll

 

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