Magnets, motion and measurement

[ayeaye]

BUT you did not write about weak magnets above and now you come along with a weak magnet example!

End this meaningless verbal game please, this has no value for anyone. Not saying weak doesn't mean that i meant very strong, obviously it doesn't.

[ayeaye]

Or that you "feel" less pull on the way out than on the way in?

Yes exactly. That the stronger pull on the way in gives it more energy than the weaker pull on the way out, opposite to its direction of movement, takes from it. Thus a net energy gain. Like a speed gain. What moves on the drawing below is just some iron object.

And it may even be possible in some straight path, as my experiment shows.

[shylo]

Yes, the pull in is greater than the out but,
You use the gain to move from where you went in (2 o-clock)to where you exit(12 o-clock).
artv

[ayeaye]

You use the gain to move from where you went in (2 o-clock)to where you exit(12 o-clock).

No, when the force is radial, then moving near the pole takes no energy, as the force is then always perpendicular to the path.

[Floor]

This is a conservative evaluation of the ratio of, the work in  to  the work out, of the magnet interaction set,
demonstrated in the "amazeing.mpg" video.         @ https://www.dailymotion.com/video/x6gzr2q

                                OUTPUT

11 mm = the thickness of the shield magnet plus a small gap on each side.

Repelling force available between the output magnets at 11mm = 156g

Repelling force available at 40mm = 15g  (Max. distance at which the force between the output magnets was measured in this run).

Average force through the output stroke is very conservatively 40 g

I arrived at this 40 gram value by using a graph of the force to distance, which is from a previous measurement set,
of the ceramic magnets I use (orientated edge to edge).  The slope of that graph, actually gives a 75 gram average force
value for the magnets if  / when the force is 156 grams at an 11 mm distance between the output magnets and the force
is 29 g when they are at a 40 mm distance.  I underestimated from 75 grams average force because I didn't do a complete
set of measurements at this time.  This is an anti-fudge factor.  It is toward   non O.U.   results by 47 %  (40g is only 53 % of 75g).
................................................................
40g = 0.392N

40mm - 11mm  =  29mm = 0.029m  (output magnet's travel)

0.392N  X  0.029m = 0.011368  Joules of output
................................................................
                               INPUTS  (3)

5g force to motivate the shield magnet

5g = 0.049N
................................................................
1.  0.049N   X   0.048m = 0.002352 J as shield install (1 and 7/8 inch travel (this is the shield magnet's length)
................................................................
2.  0.049N   X   0.048m = 0.002352 J as shield removal (1 and 7/8 inch travel)
................................................................
5g force to motivate the output magnet's return from 40mm to 11mm  (40 - 11 = 29)

5g = 0.049N
................................................................
3.  0.049N   X   0.029m = 0.001421 J as return of the output magnet to start position.
................................................................
                            0.006125  Joules  = total input

                    INPUT TO OUTPUT

0.011368  J  /  0.006125  J = 1.856   output is 1.856 times greater than the input

Note... Using a shorter output stroke would also have decreased one of the input stroke lengths (this = less input energy).
A shorter output stroke, would also have kept a larger percentage of the output stroke force, within a higher force region
of the output force curve ? ? ?  There is an optimized output stroke distance, in terms of the ratio of those two displacements.
I'm not at all sure that I achieved that optimization here.

           P.S.
                  OK ayeaye, you have given some explanation of your meaning of asymmetry. Thanks / very good
               
              Not specifically or only about asymmetry of the field as in the overall shape of the field.
                     But rather.........
              about asymmetry in the magnitude of the pulling and or repelling force along a specific direction.
                 
                @ all reader, 

              (the magnitude (this is strength in this case) of a force and its direction, together,  are called a vector.
                        There are other kinds of vectors, not all vectors are force vectors.
                                    for example....  a different kind of vector would be .....
              The speed and direction of an airplane, given together are the vector of its travel.


             The maximum  "asymmetry"  in magnetic forces around permanent magnets, occurs at 90 degree
             relationships between two or more magnets.  0 degrees, 90 degrees, 180 degrees, 270 degrees

                  peace out
                         floor