A wire of mass m and length l can slide freely on a pair of smooth, vertical rails. A magnetic field B exists in the region in the direction perpendicular to the plane of the rails. The rails are connected at the top end by a capacitor of capacitance C. Find the acceleration of the wire neglecting any electric resistance.
(##HCV_VOL2_C38_E01_098_Q01##)

Answer

`(mg)/(m+CB^(2)l^(2))`