Mechanics or what?

A horizontal conducting rod of mass \(m\) is free to slide on two vertical conducting rails as shown. What is the terminal speed of the rod?

Details and Assumptions:

  • A uniform magnetic field of intensity \(B\) exists throughout the region and points into the screen.
  • The length of the rod is \(L\).
  • The resistor has resistance \(R\).

Bonus What will happen if the magnetic field is outward? Will the rod attain terminal velocity?

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