Physics, 26.07.2020 01:01 hellodarkness14

A 0.12-kg metal rod carrying a current of current 4.1 A glides on two horizontal rails separation 6.3 m apart. If the coefficient of kinetic friction between the rod and rails is 0.18 and the kinetic friction force is 0.212 N , what vertical magnetic field is required to keep the rod moving at a constant speed of 5.1 m/s

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A 0.12-kg metal rod carrying a current of current 4.1 A glides on two horizontal rails separation 6....