Surface field vs pull force(attraction force) of multiple magnets?

In summary, the conversation discusses a table of magnets with the same surface field but different pull forces due to varying sizes. It is suggested to plot the pull force against linear dimension or cross sectional area for further analysis.
  • #1
Phztastic
50
0
In the following "semi" table, is a group of magnets,
all seem to have the same Surface field but all different pull force(attraction/repulsive force at maximum with gap = 0).
How is it possibile to have the same S.field rate but different forces? Is it due to the size of each magnet?


Magnets Length Width Thickness Surface Field Pull Force
(Gauss) (lb)

B444 1/4 " 1/4 " 1/4 " 5754 4.25
B666 3/8 " 3/8 " 3/8 " 5754 10.07
B888 1/2 " 1/2 " 1/2 " 5754 18.71
BCCC 3/4 " 3/4 " 3/4 " 5754 40.59
BX0X0X0 1 " 1 " 1 " 5754 76.41
 
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  • #2
X Y A B C D

X = Magnet
Y = Length"
A = Width"
B = Thickness"
C = Surface field (Gauss)
D = Pull force (lb)
 
  • #3
Try plotting your pull force versus linear dimension and see what you get. How about pull force versus
cross sectional area?
 

FAQ: Surface field vs pull force(attraction force) of multiple magnets?

1. What is the difference between surface field and pull force of multiple magnets?

The surface field of a magnet refers to the strength of the magnetic field at the surface of the magnet. This can be measured using a gaussmeter. Pull force, also known as attraction force, is the strength of the magnetic force between two magnets. It is affected by the surface field of each magnet as well as the distance between them.

2. How does the number of magnets affect the surface field and pull force?

The more magnets that are placed together, the stronger the overall surface field will be. However, the pull force between the magnets will not necessarily increase in proportion to the number of magnets. This is because the pull force is affected by the distance between the magnets, with closer magnets having a stronger force than magnets placed further apart.

3. Is the surface field of multiple magnets additive?

Yes, the surface field of multiple magnets is additive. This means that if two magnets with a surface field of 100 gauss are placed together, the overall surface field will be 200 gauss.

4. How can I calculate the pull force between multiple magnets?

The pull force between two magnets can be calculated using the formula F = (m1 x m2) / d^2, where F is the pull force in newtons, m1 and m2 are the surface fields of the two magnets in gauss, and d is the distance between the two magnets in meters.

5. Does the shape of the magnets affect the surface field and pull force?

Yes, the shape of the magnets can affect the surface field and pull force. Magnets with a higher surface area will have a stronger surface field, while magnets with a higher volume will have a stronger pull force. Additionally, the orientation of the magnets (e.g. north pole to north pole, north pole to south pole) can also affect the strength of the pull force.

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