Two balls, A and B, each hanging vertically at the end of a string, attract each other as shown in the figure below. (Assume the figure is completely symmetric and the two strings are exactly at the same angle with the vertical.) A For each of the following situation state clearly if that could be a possible explanation of the figure or not and why. 1. Balls A and B are both charged with equal but opposite charges. 2. Balls A and B are both charged with opposite charges and ball A has more charge than ball B. 3. Only ball A is charged and ball B is neutral.

Two balls, A and B, each hanging vertically at the end of a string, attract each other as shown in the figure below. (Assume the figure is completely symmetric and the two strings are exactly at the same angle with the vertical.) A For each of the following situation state clearly if that could be a possible explanation of the figure or not and why. 1. Balls A and B are both charged with equal but opposite charges. 2. Balls A and B are both charged with opposite charges and ball A has more charge than ball B. 3. Only ball A is charged and ball B is neutral.