The ball moves to can 1 because It is charged because it is connected to VDG. The ball moves to can 1 because It is charged because it is connected to VDG
When the ball touches the VDG dome, it gains positive charge by direct contact. The positively charged VDG induces a negative charge on the side of Can 1 closest to it. This happens because the positive charges on the VDG repel the electrons in Can 1, pushing them to the opposite side.
The positively charged ball is attracted to the negatively charged side of Can 1 due to the opposite charges attracting each other. The ball swings towards Can 1 until it touches it, discharging some of its charge to Can 1 and reaching equilibrium.
The primary cause of the ball's movement is the positive charge it gains from the VDG and the subsequent attraction to the negatively charged side of Can 1. While the VDG itself plays a crucial role in charging the ball, it's the charge on the ball and Can 1 that directly drives the movement.