Undergrad How does a rotating magnet create levitation?

Thread starter sergiokapone
Start date Nov 2, 2022
Tags

Levitation Magnet Magnetic dipole Rotating

Click For Summary

SUMMARY

A rotating magnet generates an alternating current (AC) magnetic field that induces currents in conductive surfaces. According to Lenz's law, these induced currents oppose changes in the magnetic field, resulting in a repelling force that can create levitation. This principle is effectively utilized in Maglev trains, showcasing its practical application in transportation technology.

PREREQUISITES

Understanding of Lenz's law
Basic knowledge of electromagnetic fields
Familiarity with alternating current (AC) principles
Concept of magnetic levitation

NEXT STEPS

Research the principles of electromagnetic induction
Explore the design and operation of Maglev train systems
Study applications of Lenz's law in modern technology
Investigate the physics of magnetic levitation in various contexts

USEFUL FOR

Physics students, engineers, and transportation technology enthusiasts interested in the principles of magnetic levitation and its applications in modern transit systems.

Nov 2, 2022

sergiokapone

Is any physical explanation of this effect?

Physics news on Phys.org

Nov 21, 2022

Henryk

Gold Member

Yes, A rotating magnet creates an AC magnetic field. That induces currents within the conductive surface which, by Lentz law, oppose the changes in the magnetic field, ergo, create a repelling force.
This principle has been applied to Maglev trains.