The amount of water filling a glass that is tilted in the water goes down as the glass fills up. Must be because the glass becomes more upright.
The rate at which a glass moves from flat to upright as it fills up is dictated by the height of the glass.
A glass with a quantity of water in it set spinning in a bath will spin for a time from the amount of water in the glass and the size of the glass.
The size of a glass determines the amount of work to start spinning. Something to do with the glass touching the water slowing it down or making it sticky?
The size of a glass determines how quickly it will come to a rest after it has been set spinning given a fixed amount of liquid in the glass.