Activity 4: Demonstrating the Importance of Friction-Reducing Structures
Obtain a balloon and fill it with water. Push on the balloon until your two fists touch, and move your fists back and forth over one another. What is the amount of friction generated?
Not much friction at all.
How does the presence of a cavity containing fluid influence the amount of friction generated?
More fluid=less friction
What anatomical structure does the water containing balloon mimic?