What happened when you put a negative charged balloon next to a positive charged Diet Coke can?

When a negatively charged balloon is brought near a positively charged Diet Coke can, the balloon induces polarization in the can. The negative charges in the balloon repel the electrons in the can, causing the positive charges to move closer to the side facing the balloon. This results in an attractive force between the negatively charged balloon and the positively charged can, which can lead to the can moving towards the balloon.