#### Transcript Force of Kinetic Friction Pre-Lab (print version)

```Force of Kinetic Friction Pre-Lab
What factors affect the amount of friction between two surfaces?
Force of Friction
Normal Force
Types of Surfaces
Surface Area
Velocity
Force of Kinetic Friction Pre-Lab
Data Studio
What factors affect the amount of friction between two surfaces?

FN
Force of Friction  FT  FForce probe
Normal Force  Fg  mg

FT

F fk
Types of Surfaces
Surface Area
Velocity

Fg
Force Probe
Force of Kinetic Friction Pre-Lab
What factors affect the amount of friction between two surfaces?

FN
D Force of Friction  FT  FForce probe
I Normal Force  Fg  mg
I Types of Surfaces
Surface Area

FT

F fk
Velocity

Fg
Purpose: To create graphical and mathematical representations
of the relationship between the force of friction, the
normal force, and the types of surfaces.
Force of Kinetic Friction Pre-Lab
Purpose: To create graphical and mathematical representations
of the relationship between the force of friction, the
normal force, and the types of surfaces.
• Open the Data Studio file Friction vs. Normal Force.
• Mass the loose friction tray and record below. Do not
separate the plastic tray from the force probe!
• Remember to tare (zero) the force probe with nothing attached
to it before your first trial.
Tare Button
Force of Kinetic Friction Pre-Lab
Purpose: To create graphical and mathematical representations
of the relationship between the force of friction, the
normal force, and the types of surfaces.
• Open the Data Studio file Friction vs. Normal Force.
• Mass the loose friction tray and record below. Do not
separate the plastic tray from the force probe!
• Remember to tare (zero) the force probe with nothing attached
to it before your first trial.
• Start with just the two friction trays, and then add 100 g = 0.100 kg
into the friction trays for each additional set.
• Keep a single black bar mass on top of the constant velocity
cart at all times.
• You must select the region of the graph for each trial that
corresponds to the constant velocity part of the motion to
measure the force of kinetic friction.
```