Positive charge Q is distributed uniformly over a ircular ring of radius R. A particle having having a mass ma and a negative charge q, is placed on its axis at a distanc ex from the centre. Find the force on the particle. Assuming x<< R, Find the time period of oscillation of the particle if it is released from there.
A thin fixed ring of radius 1 m has a positive charge 1×10−5C uniformly distributed over it. A particle of mass 0.9gm having a negative charge of 1×10−6C is placed on the axis at a distance of 1cm from the centre of the ring. Assuming that the oscillations has small amplitude, the time period of oscillations is:
A ring of radius 100 cm has a uniformly distributed charge Q and uniformly distributed mass m. On the axis a point charge –Q of mass 2m is placed at a distance 3 cm form its centre. Both are released from rest. Assuming only electric interaction between the ring and particle, find the amplitude (in cm) of SHM of particle.___