Three Books (X, Y, and Z)rest on a Table

question 69

Multiple Choice

Three books (X, Y, and Z) rest on a table.The weight of each book is indicated.The net force acting on book Y is:

• A)4 N down
• B)5 N up
• C)9 N down
• D)0 N
• E)none of these

---

Definitions:

Internal

Pertaining to or existing within an entity (such as an individual, organization, or system).

Stable

Characterized by consistency, permanence, and resistance to change over time.

Unstable

Characterizes a state or condition that lacks consistency, predictability, or emotional steadiness.

Belief Perseverance

A tendency to continue to view an initial assumption as correct despite evidence to the contradictory.