How Do Magnetic Fields Influence Needle Behavior in Scientific Experiments?

AI Thread Summary
The discussion focuses on the influence of magnetic fields on needle behavior, particularly in relation to bar magnets and magnetic needles. It is suggested that bringing a bar magnet near a magnetic needle will not change the needle's direction if the magnet is aligned with the magnetic meridian. Reversing the magnet's position is believed to maintain the neutral points, but using a stronger magnet would shift the neutral point closer to the magnet due to its increased force. The dip needle points downward because it measures the vertical component of the Earth's magnetic field, unlike a compass needle, which remains horizontal. The angle obtained from the dip needle indicates the relative magnitudes of the magnetic field components, with a reported angle of 23 degrees.
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Homework Statement


suppose a bar magnet is brought near a magnetic needle in a way that does not disturb the latter's position in the magnetic meridian. What can be said concerning the direction of the field due to the magnet?

2. Would reversing the position of the magnet has any effects on the neutral points? and what would a stronger magnet affect the positoin of the neutral ponit.

3.explain why a dip needle point down rather than horizontal as does a compass needle. why does a compass needle not indicate a dip angle?
4. Does the dip needle give any indication of the relative magnitudes of the horizontal and vertical components of the Earth's magnetic field in your locality? explain, using vectors. The angle we got from dip needle was 23.

Homework Equations





The Attempt at a Solution



1)I think there won't be direction change, that the bar magnet would be in alignment with the magnet needle. but I'm not sure.
2)Reversing the magnet position, there would still be neutral points, and there won't be any change to the position. It would all be the same. But if a stronger magnet is used instead, then the neutral point would be closer to the center of the bar magnet, since it would take more force from Earth magnetic field to cancel out the magnetic field of the stronger one than the weaker one. But the change would be insignificant, since Earth's magnetic field is so much stronger than the magnet bars.
3) I have no clue...
4) no clue...

again I'm not sure about my attempts "answers"
 
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