Suppose I have an oil drop which is negatively charged placed in a box with the bottom of the box negatively charged. When this box and oil drop is placed on a table where the box is stationary, the oil drop is stationary in the middle of the box. Hence, we can conclude that the force of repulsion between the negatively charged oil drop and bottom surface of the box is EQUAL to the the weight.
So now, I drop the whole system from the top of a building. Assume there is no air resistance. Since the whole system is in free fall, is it correct to say that for the same oil drop and box, the oil drop will now move upwards towards the top of the box?
Since free fall is the same as being in outer space with zero gravity.