https://file.aiquickdraw.com/mathbot/file/17291933204388k7ywwdt.jpg

The diagram shows the forces acting on a book on top of a table.
 
Which force is represented by the arrow at A?

A.Gravitational force

B.Friction force

C.Normal force

D.Applied force


The diagram shows a book resting on a table, with two forces represented by arrows:

- Arrow **A** is pointing upward.
- Arrow **B** is pointing downward.

These arrows typically represent forces in equilibrium for an object at rest.

### Explanation:
- The force represented by **arrow A** is acting upward, which counteracts the downward force exerted by gravity (represented by **arrow B**).
- **Arrow A** represents the **normal force**. The normal force is the support force exerted by a surface (the table in this case) that pushes upward against the object.

So, the force represented by **arrow A** is the **normal force**.

### Correct answer:  
**C. Normal force**

Would you like more details or have any other questions?

Here are five related questions for deeper understanding:
1. What is the relationship between normal force and gravitational force when an object is at rest?
2. How would the diagram change if the table were tilted?
3. What happens to the forces if an external force is applied to the book horizontally?
4. What is the role of friction in this setup if any external force were applied?
5. How can you calculate the magnitude of the normal force?

**Tip:** In static equilibrium, the normal force and gravitational force are equal in magnitude but act in opposite directions.

The diagram shows the forces acting on a book on top of a table. Which force is represented by the arrow at A?
A.Gravitational force
B.Friction force
C.Normal force
D.Applied force

Learn how to identify forces acting on a book at rest on a table. The normal force is explored in this concept, with an explanation of equilibrium between normal and gravitational forces. Suitable for students in Grades 5-8.

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