Coulomb's Law states that the force of attraction betweentwocharged particles is directly proportional to the product ofthecharges and inversely proportional to the square of thedistancebetween them. The figure shows particles with charge 1located atpositrons 0 and 2 on a coordinate line and a particlecharge with-1 at a positionxbetween them. It follows fromCoulomb's Law that the net forceacting on the middle particleis
F(x)= -k/ x2+ k / (x-2)2 0 < x<2
where k is a positive constant. sketch the graphof the net forcefunction. What does the graph say about theforce?
