|Apr26-12, 10:19 AM||#1|
Magnetic pull force with a gap
Hello. I'm a cabinetmaker and my college physics courses are 25 years behind me now. I'd consider it a kindness if someone would answer a question for me regarding magnetism.
I have a magnetic strip that is described as having 6.2 lb. of magnetic pull force per lineal foot, 1" wide and 0.020" thick, and at 0" of air gap.
How would I recalculate that for a gap of about 1/8" through a transparent material such as lexan?
I'm hoping it's as simple as applying some co-efficient or simple calculation based on the gap distance.
|Apr26-12, 04:23 PM||#2|
there isn't a simple way to do it, you'll just need to measure the force for a single foot of the material with the spacing. Even then it will only be an approximation. the force for a single foot will be the force per foot you're looking for.
|Apr26-12, 04:24 PM||#3|
I think I would try to determine it in experiment. While it is possible to calculate it with some additional assumptions about the magnetism in the strip, I think that the corresponding errors would be quite large.
Edit: Nice timing.
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