Electric Field – equilateral triangle
See Attached .jpg for further information on this as well, please:
Three charges of equal magnitude q are fixed in position at the vertices of an
equilateral triangle (drawing). A fourth charge Q is free to move along the
positive x axis under the influence of the forces exerted by the three fixed
Find a value for s for which Q is in equilibrium. You will need to
solve a transcendental equation.