A) Three conducting spheres, a, B, and c, form
an equilateral triangle of side length "l" and have
initial charges of -2q, -4q, and 8q, respectively.
Show that the magnitude of the electrostatic force
between spheres a and c is given by
F_ac= (4q^2)/(π€_o l^2 )
B) The following steps are then taken: a and b are
connected by a thin wire and then disconnected;
b is grounded by the wire and the wire is then
removed; b and c are connected by the wire and
then disconnected. Show that the magnitudes of
the electrostatic forces between spheres a and c
and between spheres b and c, respectively, are
F_ac=(3q^2)/(π€_o l^2 )
F_bc=(4q^2)/(π€_o l^2 )
I think I got part A right, but part B i seem to be stuck unfortunately.
Any help would be appreciated, thanks.
The Attempt at a Solution