A copper bar of mass m rest at right angles to two parallel horizontal l distance apart . The rails are connected by a resistor R at one end and kept
A copper bar of mass m rest at right angles to two parallel horizontal l distance apart . The rails are connected by a resistor R at one end and kept open at the other ends . Ther is a uniform upward magnetic fields of induction B.The bar is pulled away from the closed end by a constant force F. Calculate the terminal velocity of the bar when `mu` is the coefficient of frction between the rails and the bar .
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