A thin fixed ring of radius a has a positive chage q unformly distributed over it.A particle of mass
Channel: Doubtnut
Date: 2020-07-12

A thin fixed ring of radius a has a positive chage q unformly distributed over it.A particle of mass m having a megative charge Q, is placed on the axis at a distance of `x(xltlta)` form the center of the ring. Show that the motion of the negatively chaged particle is approximatly simple harmonic. Calculate the time period  of oscillation.