Why Do Metallic Cylinders Rotate in a Magnetic Field?

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SUMMARY

The rotation of metallic cylinders in a vertical magnetic field is a result of electromagnetic induction, where the interaction between the magnetic field and the electric current flowing through the metal generates a torque. This phenomenon is explained by the Lorentz force, which acts on charged particles in the conductor, causing the cylinder to rotate. The discussion highlights the importance of understanding vector determinants in analyzing the forces at play, specifically the interaction between the magnetic field and the induced current within the cylinder.

PREREQUISITES
  • Understanding of electromagnetic induction principles
  • Familiarity with the Lorentz force law
  • Knowledge of vector mathematics, particularly determinants
  • Basic concepts of electric current in conductors
NEXT STEPS
  • Study the principles of electromagnetic induction in detail
  • Learn about the Lorentz force and its applications in physics
  • Explore vector mathematics, focusing on determinants and their physical interpretations
  • Investigate practical applications of rotating metallic cylinders in magnetic fields, such as in electric motors
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Physics students, electrical engineers, and anyone interested in the principles of electromagnetism and their applications in technology.

echoSwe
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When you apply a vertical magnetic field to a metallic cylinder suspended by a string it begins to rotate. Why does it do so?
Thanks

//Henke
 
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Doesn't anyone know about this?
Doesn't it have something to do with the fact that a metal rod in which electricity is flowing starts to vibrate when put under a vertical magnetic field?
I've heard something about determinants of two vectors where one is the force by the magnetic field acting vertically and the other from the magnetic field withing the metal rod. The determinant of these two go on a third axis as to make the vectors 3D, and hence it starts to vibrate. Or? Any similarities or am I on the wrong path?
 

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