A metal wire of mass m = 0.400 kg slides without friction on two horizontal rails spaced a distance d = 0.40 m apart, as in the figure. The track lies in a vertical uniform magnetic field B = 0.50 T. There is a constant current i = 0.35 A through generator G, along one rail, across the wire, and back down the other rail.
Find the speed and direction of the wire’s motion as a function of time, assuming it to be stationary at t = 0. Evaluate for t = 0.5 s. Take positive to the right and negative to the left.
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