A particle having charge Q and mass M = 2 m is tied to two identical particles, each having mass m and charge q. The strings are of equal length, l each, and they are inextensible. The system is held at rest on a smooth horizontal surface (with string taut) in a position where the strings make an angle of `60^(@)` between them. From this position the system is released. (a) Find the amplitude of oscillation of M (b) Find maximum speed acquired by M (c) Find tension in the string when all the three particles get in one straight line.

Answer

(a). `(sqrt(3))/(4)l`
(b). `(q)/(4)sqrt((1)/(pi epsilon_(0)ml))`
(c). `(q)/(16pi epsi_(0)l^(2))(5q+4Q)`