1. Warm Up 11/12: Friction Force
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2. Drawing Free Body Diagrams
-Represent the object with a dot:
-Arrows represent forces acting on the object.
-The length of the arrow represents the amount of force:
- The direction of the arrow shows the direction that the force is acting.

3. A book sitting on a table (at rest). Diagram the forces on the book.

4. Book on the table Fn Normal force on book by table
Fg Gravitational force on book
by earth

5. A book sitting on a table (at rest) with a mouse pushing on the book
A book sitting on a table (at rest) with a mouse pushing on the book. The book is not moving.
Diagram the forces on the book.

6. Book on the table Fn Normal force on book by table
Fg Gravitational force on book
by earth
Fpush on book by mouse
Ffriction on book by table

7. A lizard on a vertical wall (at rest).
The lizard is not moving.
Diagram the forces on the lizard.

8. Lizard on the wall Ffriction on lizard by wall
Fg Gravitational force on lizard
by earth