secured at point Ex A particle of mass m and charge q is

Last updated: 6/7/2023

secured at point Ex A particle of mass m and charge q is attached to a light insulating thread Exactly below point O there is a small ball having charge Q fixed on an insulating horizontal surface The particle remains in equilibrium vertically above the ball with the string taut Distance of the ball from point O is L Find the minimum value of Q for which the particle will be in a stable equilibrium for any gentle horizontal push given to it q L L