Assume that the rails are frictionless but tilted upward

Chapter , Problem 75

(choose chapter or problem)

Assume that the rails are frictionless but tilted upward so that they make an angle with the horizontal, and with the current source attached to the low end of the rails. The magnetic field is still directed vertically downward. (a) What minimum value of is needed to keep the bar from sliding down the rails? (b) What is the acceleration of the bar if is twice the value found in Part (a)? SSM

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