Go Back   Physics Help Forum > College/University Physics Help > Advanced Electricity and Magnetism

Advanced Electricity and Magnetism Advanced Electricity and Magnetism Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Mar 29th 2009, 04:38 PM   #1
Junior Member
 
Join Date: Mar 2009
Posts: 1
The Effective Strength of Multiple Disc Magnets Stacked Together

I spent a long time just trying to find the right equation and it was no surprise that I did not understand a variable of it.

1. The problem statement, all variables and given/known data

Why is it that a tower of identical disc magnets behaves differently (is stronger than?) a single magnet.

Known: NO NUMBERS
Each disk is identical in every shape and form

2. Relevant equations

This is the equation I found:

3. The attempt at a solution

I figured that as more and more discs are attached 'L' increases, as it gets longer, however this causes the Flux density at x (Bx) to decrease. The only logical thing I got out of that is that the Residual flux density must increases as more are added. The only problem is, I don't know how much. As the magnets are identical, is the increase uniform (Br with one magnet = x, with two magnets = 2x, etc)? Exponential? Is there no change or is it the wrong equation?

Thank you for your help.

(RE: Format, copy pasted from another forum that requires it)
rfrederick is offline   Reply With Quote
Old Mar 30th 2009, 12:29 AM   #2
Physics Team
 
Join Date: Feb 2009
Posts: 1,425
Use a magnetometer/ magnetic needle and check the deflection for different stack lengths,making sure the closest point of the stack is always at the same distance from the needle. This should give you some idea.
physicsquest is offline   Reply With Quote
Reply

  Physics Help Forum > College/University Physics Help > Advanced Electricity and Magnetism

Tags
disc, effective, magnets, multiple, stacked, strength



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
experiment about magnets utaminium Electricity and Magnetism 1 Apr 28th 2014 06:24 AM
Fe magnets alfarooqui Electricity and Magnetism 1 Apr 27th 2013 10:12 PM
Question regarding bismuth and neo dymium magnets Levi T Ation Electricity and Magnetism 0 Feb 25th 2011 10:16 AM
Disc and a charge danilorj Advanced Electricity and Magnetism 1 Dec 30th 2009 03:46 AM
I'm a little confused with magnets. Help please redmosez Electricity and Magnetism 1 Aug 4th 2009 10:37 PM


Facebook Twitter Google+ RSS Feed