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Easy Java Simulations (2001- ) => Collaborative Community of EJS => Topic started by: engrg1 on December 17, 2012, 10:39:10 am



Title: Falling Magnet With Magnetic Field Lines
Post by: engrg1 on December 17, 2012, 10:39:10 am
This remix is based on the original  Ejs Open Source Long Magnet Falling Through solenoid Model Java Applet
derived from http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2391.0 by lookang
and original model by http://www.compadre.org/osp/items/detail.cfm?ID=10327 Magnet Falling Through Ring Model written by Francisco Esquembre.
This simulation was created as part of the MOSEM2 project.


Modifications:
(1) Include the Magnetic Field lines (Remix the Magnetic Dipole Field 3D codes by Wolfgang . http://www.opensourcephysics.org/items/detail.cfm?ID=12361]
(2) Magnetic field lines only drawn initially
(3) Link the Strength Magnetic field to magnetic field lines

To change the "shape of the magnetic field", please change the start_y position.



Title: Re: Falling Magnet With Magnetic Field Lines
Post by: lookang on December 17, 2012, 04:38:04 pm
building on engrg1 good work on the 2D field lines,

i will make it customized to the test question scenario


Title: Re: Falling Magnet With Magnetic Field Lines
Post by: lookang on December 18, 2012, 04:32:40 pm
added constant velocity capability
but found a bug in the emf induced does not change direction with B = + or B = - values.

will have to put in the fix again
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2399.0
   Re: Ejs Open Source Long Magnet Falling Through solenoid Model Java Applet by LTL
« Reply #3 on: March 27, 2012, 09:04:16 am » posted from:SINGAPORE,SINGAPORE,SINGAPORE
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[toggle author information] fixed bug
ejs_MagnetFallingltlxmlcoil01.jar (1632k) fix bug of NorthSouth pole corrected with correct electron rotation direction  after feedback by RVHS
* ejs_MagnetFallingltlxmlcoil01.zip (11.86 KB - downloaded 0 times.)
http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=2399.0;attach=4689