A ring of radius 6 cm that lies in the yz
plane carries positive charge of 7 μC uniformly
distributed over its length. A particle of mass
m carrying a charge of −7 μC executes small
oscillations about the center of the ring on its
axis with an angular frequency of 15 rad/s.
Find the angular frequency of oscillation of
the mass if the radius of the ring is doubled
while keeping the linear charge density on the
F = kQq/r2
The Attempt at a Solution
I don't even know where to start with this one. To be honest, I'm not entirely sure what's actually going on. Is the particle going around the ring? Is it going right through it? I have no idea.