Oscillation of magnet

hi there ,

When a North Pole of a magnet is made to oscillate in the direction of earths North Pole magnetic field.
Also When a south pole of a magnet is made to oscillate in the direction of earths north pole magnetic field .

I then measure both of there period of oscillation

When doing this practically. The period of oscillations that I get ,I don’t fell it’s very reliable or accurate.

So I’m thinking there may be physical factors that are effecting the periodic oscillation.

This may be due to the place I’m doing the experiment in i.e. on top of a table might effect, because the table has some metal parts (i.e iron ,not aluminium…) also the building structure I’m inside .(most building are made from metal(steel) and concrete )

And finally the electrical appliances and electric wires, which are carrying current and ones that have magnets in them such as loudspeakers, motores … may have an effect.

I can only think of these, is there any more physical factors? Also how could I improve this experiment?


Thank you for reading this, I would very much appreciate if one could help me, asap.

 

PHP:

    How do you get the south pole of a magnet to oscillate in the direction of the earth's north pole? Can you describe your setup?

i drew it on paint lol. it may help, i think it would be better than me describing . (its attached to this post)

thank you

 

upload2world.com/pic89/upload2world_f9c67.jpg

the picture is on this link , its not allowing me to write www .

 

yes your right .different periodic time is observed for both orientations N-N N-S i.e. earths north pole is aligned with north pole of magnet then earths north pole is aligned with soth pole of magnet .N-N takes longer time
(I have no idea why) -thinking about it theoretically it should be the same.

the peiodic time is the converted to frequency and.... it gets more complex.


(Fn)^(squared) - (Fs)^(squared) = K Hb

Fn = frequency of N-N
Fs= frequency of N-S
K= constant (i dont know what it is)
Hb= earths horizontal magnetic field component

k is Determined then .