Introduction to Electrodynamics · Problem 7.48

Conservation Laws — David J. Griffiths

Physics · falling-ring-terminal-velocity

Problem

Refer to Prob. 7.11 (and use the result of Prob. 5.42): How long does it take a falling circular ring (radius

a

, mass

m

, resistance

R

) to cross the bottom of the magnetic field

B

, at its (changing) terminal velocity?