You have a glass of water with a cork floating in it. The cork is attached by a spring under some tension that is also attached to the bottom of the glass so the cork is slightly pulled deeper in the water than just by its own weight thus the cork has a bit more buoyant force. The cork always remains centered in the glass. If the glass is dropped free fall and remains vertical and no water spills out what motion does the cork do relative to the glass wall, obviously before it hits the ground? Go up, down, remain the same and why?