Surface Tension
 

Surface Tension problem 1


The frame has a bar 6 cm long, which can be moved as desired. We dip the frame into a soapy solution so that a membrane is formed over the entire surface. Then, we move the bar by 2 cm so that the soapy surface increases. How much work have we done? How much force was needed? The surface tension of the interface is .



 

material editor: Gabriel Amakhabi