A 0.40kg metal slider is sitting on smooth (frictionless) conducting rails as shown below. What is the magnitude and direction of the acceleration of the slider? Given, B = 3.0T I = 5.0A m = 0.40kg R = either 0.1m or 0.05m, im not sure if you half it because its a raidius. How can you figure out the acceleration of the slider? or would the acceleration be zero since the rail with the current hading left would counteract the rail with the current heading right? therefore acceleration = 0 and magnitude would not be applicable? I'm not sure what to do here thanks in advance for any help!