Two small charged identical balls are suspended on light silk threads of the same length, attached to the ceiling at one point. The balls are in balance. The angles formed by the threads with the vertical will be equal.
If the masses of the balls are equal and their charges are equal
If the masses of the balls are equal, and the ratio of their charges is greater than one.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.