There is an Eureka can and an object is put on it.
- If the object is floating, then there is no weight difference for the water container. ()
- If the object is fully submerged, then the water container is getting heavier since no more bouyancy force is equal to the weight of the object. (). It will be heavier than before.
- If the object floating in its own liqud, (e.g. ice in water) then if the solid part melts the liquid level does not change.