Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: maglev forces

Learn more physics!

Most recent answer: 01/02/2018
Q:
Why a maglev train doesn't attract the metals like keys or phones carried by the passengers in it??
- Anonymous (age 15)
Pakistan
A:

The magnetic fields are arranged to be large near the rails but fall off quickly farther away. You can see how that would work if you have a horseshoe magnet. The field in the gap is large but it gets very weak away from the gap.

Mike W.


(published on 01/02/2018)

Follow-up on this answer.