Magnet Falling Through Ring Model written by Francisco Esquembre
lookang
245 Posts
Magnet Falling Through Ring Model written by Francisco Esquembre http://www.compadre.org/osp/items/detail.cfm?ID=10327
Hi Prof Paco! i have a question about this computer model. is the length of the magnet a variable programmed into the codes? i cant seems to follow the codes if indeed if it is programmed.
i tried to lengthen the magnet but the simulation still gives the same emf graph as if the length is the same.
the end goal is to allow 2 magnetic dipoles at each end of the magnet so that if the magnet is longer, the peaks of the emf is further apart.
my work and discussion with teachers can be found here http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2066.0
attached is my remixed source code for your consideration to advice me how to change the codes or you may wish to release your own more powerful model that allows the length of magnet to be varied:)
Re: Magnet Falling Through Ring Model written by Francisco Esquembre -
Francisco Esquembre
237 Posts
Hi Wee,
If I remember it well, the magnet is modeled as if it were a magnetic dipole. Hence, the length of the magnet makes no difference... But, please, don't press me hard on the physics side of it! :-) Someone else provided me with the equations.
I'll be glad if you can improve the model to a more realistic magnet. But the physicists that worked with me told me this was a far from trivial issue.
Re: Re: Magnet Falling Through Ring Model written by Francisco Esquembre -
lookang
245 Posts
Hi prof paco, according to this http://www.fisica.uniud.it/URDF/mptl14/ftp/full_text/ws4.pdf an EJS experiment: magnet falling through copper tube already exists through the great efforts of MOSEM2 project. any chance of releasing it on OSP?
Re: Re: Re: Re: Magnet Falling Through Ring Model written by Francisco Esquembre -
lookang
245 Posts
copper tube = solenoid = appears you may have already created this copper tube version in 2009. i didn't see it in OSP, it is available? see attachment, looks awesome :)
ring = a single round = this is the shared version in OSP
