Figure-5.39 shows two vertical smooth rails AB and CD separated by a distance l. Ends A and
Channel: Doubtnut
Date: 30/08/2020

Figure-5.39 shows two vertical smooth rails AB and CD separated by a distance l. Ends A and C are connected with capacitor of capacitance C. A rod PQ of mass m is horizontally kept in touch with both rails as shown. If it is released at t=0 and it remains in contact with rails during its fall, find the charge on capacitor as function of time. Neglect resistance of connecting wires and rails.