Acceleration is indicated by the tilting of the pendulum and of the water surface.
These are then attached to a turntable, rotating at constant speed, and the accelerometers indicate a constant acceleration towards the centre of the turntable. Various alterations are made to the system, altering the speed of rotation, and altering the distance of the apparatus from the centre of the table. It is found empirically that the magnitude of the acceleration increases with increased angular speed, and also with distance from the centre.