NOTE:
You must be connected to the Internet the first time you view this simulation, at which point the codebase for all the simulations will be downloaded to your computer. This process make take a few minutes, as the codebase is roughly 9MB in size. Subsequent viewings of the applets will run from your local copy. |
|
| DESCRIPTION:
This applet illustrates the forces on a current carrying
coil sitting on the axis of a permanent magnet. For
current flowing in one direction in the coil the force
on the coil will be upward, and if the current is strong
enough the coil will levitate, floating on the magnetic
fields of the coil plus the magnet. This is the way
one form of MagLev works. For the other direction of
current the coil is attracted to the magnet The magnet
has its north pole at the top, and the direction of
positive current is counterclockwise when viewed from
above. The coil initially rests at one coil radius above
the magnet on a platform. There is a marker at two coil
radii above the magnet. A quantitative problem at this
link gives you an idea of the currents you need
to get levitation in the simple experiments which this
applet illustrates.
|
|
