Resumen de Floating Together on the Top
When eating cereal for breakfast, it is common to observe how cereal pieces move to the walls of the bowl. The same thing occurs when having tea— the small leaves tend to move toward the cup walls. While the suspension of objects on liquids due to surface tension is usually discussed in introductory physics courses, this phenomenon is not usually explained in textbooks. Besides, most texts interpret the surface tension as a membrane of liquid that pushes the object up, suspending it completely by the surface tension force. But the surface tension force depends on the liquid-object affinity, and there are also other forces involved in the phenomenon. In this paper the phenomenon is discussed and explained.
