A conducting rod
is placed on two long parallel (smooth and conducting) rails connected to a capacitor as shown. The rod
is connected to a non conducting spring of spring constant
, which is initially in relaxed state. The entire arrangement is placed in a magnetic feild perpendicular to the plane of figure.
Neglect the resistance of the rails and rod.
Now, the rod is imparted a velocity
towards right, then acceleration of the rod as a function of its displacement