Chapter 4, Problem 23Q

(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.)

. The ''suction cup" (Figure 4.54) is a common device used to suspend pictures, plants, and other objects from walls, ceilings, windows, and other smooth surfaces. Why is the name "suction cup" a bit of a misnomer? Is anything really "sucking"? I low exactly does a "suction cup" work? Explain