Show that terminal velocity equals

[wayneinsane]

Homework Statement

A conducting rectangular loop of Mass M and resistance R and length l and width w falls from rest into a magnetic field B as shown. During the time interval before the top edge of the loop reaches the field, the loop approaches the terminal speed v T .

Show that Terminal velocity (Vt) = MgR
B2w2

Homework Equations

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The Attempt at a Solution

HAve Nooooo Clue!

 

[wayneinsane]

it should be Vt = mgR/B2w2

 

[Phrak]

Use the formula for the force on a current carrying wire in a uniform magnetic field where the wire is moving with respect to the magnetic field.