A conducting bar of mass 0.12 kg and length 0.30 m can slide on a pair of long…
PHYSICS · Multi-part · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A conducting bar of mass 0.12 kg and length 0.30 m can slide on a pair of long horizontal rails. The entire system is placed in a uniform magnetic field of 0.80 T acting vertically upward. A current of 6 A is maintained in the bar from south to north. The coefficient of kinetic friction between the bar and the rails is 0.20.
(a) Find the magnitude of the magnetic force acting on the bar.
(b) Calculate the magnitude and direction of the frictional force acting on the bar.
(c) Determine the net horizontal acceleration of the bar.
(d) If the bar starts from rest, how far will it travel in 2.0 s?