# Recognizing forces

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```					Recognizing Forces                                    Name ___________________

I.    There are several situations described below. For each situation, circle the
forces that are present and indicate the direction of the force.
1.    A block hangs from the ceiling by a rope.
Gravity                    Normal
Applied                    Friction
Tension                    Air Resistance

2.    A ball is shot into the air. Consider the forces acting on the ball while it is in the air.
Gravity                    Normal
Applied                    Friction
Tension                    Air Resistance

3.    A skydiver (who hasn't opened his parachute yet). Consider the forces
acting on the skydiver.
Gravity                  Normal
Applied                    Friction
Tension                    Air Resistance

4.    A block rests on top of a table. Consider only the forces acting upon the block.
Gravity                    Normal
Applied                    Friction
Tension                    Air Resistance

5. A block slides across the top of a table. Consider only the forces acting upon the block.
Gravity                   Normal
Applied                    Friction
Tension                    Air Resistance

6.    A block rests on an incline plane without sliding. Consider the forces acting on the
block.
Gravity                    Normal
Applied                    Friction
Tension                    Air Resistance
II. HOMEWORK: List the forces present on each scenario provided. Use an arrow
to show the direction of the forces.

1. A book is at rest on a table top.
a) What are the forces on the book?

b) What are the forces on the table?

2. An egg is free-falling from a nest in a tree. What are the forces acting on the egg as
it is falling?

3. A rightward force is applied to a book in order to move it across a desk. What are
the forces acting on the book?

4. You and your friends are playing tug of war. What are the forces
acting on the rope?

5. A car is coasting to the right.
a) What are the forces acting on the car?

b) What are the forces acting on the tires?

6. You went fishing and cough this big fish. The fish is hanging from a rope that is being
held by a fisherman.
a) What are the forces acting on the rope?

b) What are the forces acting on the fish?

```
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 views: 1 posted: 9/26/2011 language: English pages: 2