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Author Topic: Falling Magnet With Magnetic Field Lines  (Read 5170 times)
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engrg1
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on: December 17, 2012, 10:39:10 am » posted from:-,-,SINGAPORE

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.

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Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
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* FallingMagnet.png (48.98 KB, 716x546 - viewed 303 times.)
« Last Edit: December 17, 2012, 10:46:40 am by engrg1 » Logged
lookang
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Reply #1 on: December 17, 2012, 04:38:04 pm » posted from:-,-,SINGAPORE

building on engrg1 good work on the 2D field lines,

i will make it customized to the test question scenario


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lookang
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Reply #2 on: December 18, 2012, 04:32:40 pm » posted from:-,-,SINGAPORE

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



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« Last Edit: December 18, 2012, 04:36:24 pm by lookang » Logged
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"It is not the strongest of the species that survive, but the one most responsive to change." ..."Darwin(1809-1882, English naturalist Evolution)"
 
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