A 0.200-kg metal rod carrying a current of 10.0 Aglides on
Chapter , Problem 68(choose chapter or problem)
A 0.200-kg metal rod carrying a current of 10.0 Aglides on two horizontal rails 0.500 m apart. What verticalmagnetic field is required to keep the rod movingat a constant speed if the coefficient of kinetic frictionbetween the rod and rails is 0.100?
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