Physics 12 Help- Electomagnetism and Torque

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Homework Help Overview

The discussion revolves around a problem in electromagnetism related to torque and magnetic dipole moments. Participants are exploring how to approach a specific question that involves deriving a formula for torque, which is not included in their approved formula sheet.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants are questioning the derivation of the torque formula (Torque = NIAB) and discussing the necessity of using equilibrium equations and electromagnetism principles without incorporating torque. There is also mention of the magnetic dipole moment and its potential energy, indicating a need for clarification on these concepts.

Discussion Status

The discussion is ongoing, with participants sharing resources and attempting to clarify the concepts involved. Some guidance has been offered regarding the use of equilibrium equations, but there is no explicit consensus on how to proceed with the problem.

Contextual Notes

Participants note that the formula for torque is not on the approved formula sheet, which raises questions about its derivation and the constraints of the problem. There is also uncertainty regarding the inclusion of specific equations related to force and torque in their approach.

sweatpants
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Homework Statement


If you were given this question: http://img40.imageshack.us/img40/975/picture7we.png
how would you go about solving it?




Homework Equations


I found a formula that makes this question seem a lot easier. Torque = NIAB. however, this formula is not on the formula sheet that is approved by the school so I am not supposed to know about it unless i figure out how to derive it. Does anyone know how this formula was derived?


The Attempt at a Solution

 
Last edited by a moderator:
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sweatpants said:

Homework Statement


If you were given this question: http://img40.imageshack.us/img40/975/picture7we.png
how would you go about solving it?




Homework Equations


I found a formula that makes this question seem a lot easier. Torque = NIAB. however, this formula is not on the formula sheet that is approved by the school so I am not supposed to know about it unless i figure out how to derive it. Does anyone know how this formula was derived?


The Attempt at a Solution


Try http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magmom.html
 
Last edited by a moderator:
Dick said:

Hmmm. I've never actually heard of a magnetic dipole moment or its potential energy. Apparently this question is supposed to be solved using solely equilibrium equations and electromagnetism equations which don't already include torque.

Thanks for trying to help though.
 
sweatpants said:
Hmmm. I've never actually heard of a magnetic dipole moment or its potential energy. Apparently this question is supposed to be solved using solely equilibrium equations and electromagnetism equations which don't already include torque.

Thanks for trying to help though.

Is Force = Current x Length x B-field on your approved formula sheet?

Of course, you'll need to add the equation for torque to come up with the answer.
 

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