# Oscillation of magnet

Matrix0
hi there ,

When a North Pole of a magnet is made to oscillate in the direction of Earth's North Pole magnetic field.
Also When a south pole of a magnet is made to oscillate in the direction of Earth's 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.

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## Answers and Replies

TVP45
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?

Matrix0
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

#### Attachments

• mangnet.jpg
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Matrix0

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

TVP45
If I understand your diagram correctly, the suspension threads provide a restoring force that keeps the magnet from spinning all the way around, as for example a compass needle would. In effect, the threads add to aligning the north pole and oppose alignment of the south pole. I think that, if you also were to measure amplitude of the oscillations, you would see a difference. What is your purpose in doing this?

Matrix0
yes your right .different periodic time is observed for both orientations N-N N-S i.e. Earth's north pole is aligned with north pole of magnet then Earth's 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 don't know what it is)
Hb= Earth's horizontal magnetic field component

k is Determined then .

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TVP45
No, theoretically they should not be the same. The thread, or whatever that is, is messing up your experiment.