Repulsion / attraction force between magnets

AI Thread Summary
To calculate the repulsion or attraction force between magnets or between a magnet and a coil, one approach is to use Ampere's Law to determine the magnetic field generated by solenoids with a given current. Another suggested method is to conduct experimental measurements to observe the forces directly. While there is no quick solution, these methods can provide valuable insights into the magnetic interactions. Understanding the principles of magnetism and the variables involved is crucial for accurate calculations. Experimentation may yield practical results that complement theoretical approaches.
sebitab
Messages
6
Reaction score
0
Hi, I am needing some guidance to find a way to calculate the repulsion or attraction force between (magnet/magnet) or (magnet/coil) in kg force.

I know there is not a fast or easy answer to this but you will help me a lot if you can help me finding the way to calculate it.

thanks for your help in advance

regards
sebastian
 
Physics news on Phys.org
What about using 2 solenoids with current I , and using amperes law to find the B field.
Or what about doing it experimentally.
 

Thread 'Maxwell stress tensor'

This is from Griffiths' Electrodynamics, 3rd edition, page 352. I am trying to calculate the divergence of the Maxwell stress tensor. The tensor is given as ##T_{ij} =\epsilon_0 (E_iE_j-\frac 1 2 \delta_{ij} E^2)+\frac 1 {\mu_0}(B_iB_j-\frac 1 2 \delta_{ij} B^2)##. To make things easier, I just want to focus on the part with the electrical field, i.e. I want to find the divergence of ##E_{ij}=E_iE_j-\frac 1 2 \delta_{ij}E^2##. In matrix form, this tensor should look like this...
View full post »
Thread 'Applying the Gauss (1835) formula for force between 2 parallel DC currents'

Thread 'Applying the Gauss (1835) formula for force between 2 parallel DC currents'

Please can anyone either:- (1) point me to a derivation of the perpendicular force (Fy) between two very long parallel wires carrying steady currents utilising the formula of Gauss for the force F along the line r between 2 charges? Or alternatively (2) point out where I have gone wrong in my method? I am having problems with calculating the direction and magnitude of the force as expected from modern (Biot-Savart-Maxwell-Lorentz) formula. Here is my method and results so far:- This...
View full post »

Similar threads

I Magnetism: Same Pole Repulsion & Heteropolar Attraction
Replies
32
Views
2K
I Questions related to magnetic shielding separating two like poles
Replies
6
Views
827
Magnetic attraction / repulsion from the Lorentz force
Replies
35
Views
6K
Magnetic Repulsion for a Loudspeaker Motor
Replies
8
Views
7K
I Quantifying the magnetic force on a magnet moving through a coil?
Replies
5
Views
2K
I Hall effect -- is it always applicable?
Replies
7
Views
2K
I Force between opposing magnets
Replies
7
Views
1K
B Force Exerted on a Conductor by a Homogeneous Magnetic Field
Replies
1
Views
1K
Magnetic repulsion between a permanent magnet and an air coil
Replies
1
Views
2K
Magnet's attraction force on a piece of iron
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top