Magnetic Forces: Calculating Force on Uncharged Bodies

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Discussion Overview

The discussion revolves around the forces exerted by magnetic fields on uncharged bodies, specifically focusing on the phenomenon of a neutral paper clip being attracted to a magnet. Participants explore the theoretical implications and calculations related to magnetic forces and uncharged objects.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants assert that the established formulas for magnetic forces apply only to charged bodies, questioning how to calculate forces on uncharged bodies.
  • Others propose that while the magnetic force primarily acts on moving charged particles, the presence of moving charged particles within the paper clip could account for its attraction to the magnet.
  • A participant queries how to determine the force acting on the paper clip as a whole, indicating a need for a broader understanding of the interaction.
  • Some participants suggest that the paper clip has some electrical charge, despite having a net charge of zero with respect to its environment.
  • There is a question raised about the measurability of the net charge when it is stated to be zero, indicating a potential area of confusion or debate.

Areas of Agreement / Disagreement

Participants express differing views on the nature of magnetic forces acting on uncharged bodies, with no consensus reached regarding the mechanisms at play or the calculations involved.

Contextual Notes

Participants have not resolved the assumptions regarding the nature of charge in the paper clip or the implications of its interaction with a magnetic field, leaving open questions about the underlying physics.

emmkayy41
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The only formulas for forces due to a magnetic field have to do with a charged body.

How can you calculate the force acting on an uncharged body?
And if there is no force, why can you pick up a neutral paper clip with a magnet?
 
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emmkayy41 said:
The only formulas for forces due to a magnetic field have to do with a charged body.

How can you calculate the force acting on an uncharged body?
And if there is no force, why can you pick up a neutral paper clip with a magnet?
The magnetic force only acts on moving charged particles, but the paperclip has moving charged particles inside it... :wink:
 
Then how would you determine the force that is acting on the paper clip as a whole.
 
emmkayy41 said:
The only formulas for forces due to a magnetic field have to do with a charged body.

How can you calculate the force acting on an uncharged body?
And if there is no force, why can you pick up a neutral paper clip with a magnet?

Can consider that the paper clip DOES have some electrical charge, just that the net charge between the paper clip and the environment is zero.
 
thiotimoline said:
Can consider that the paper clip DOES have some electrical charge, just that the net charge between the paper clip and the environment is zero.
If the net charge between the paperclip and the environment is zero, then how can it be measured?
By the way, thank you to everyone who has responded so far, its been a big help.
 

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