Friction: Application's of Newton's Laws
Friction Box
PIRA Class: 1K20.12*

Purpose
To observe the dependence (or lack of dependence) that the following factors have on the friction between two surfaces:
1. weight of box
2. surface area of contact
3. static vs. sliding
4. surface material

Description
A. Observe the change in the force required to pull on a block of wood as masses are placed in the friction box.
B. Observe the change in force required to pull on a block of wood on its wide and narrow sides.
C. Observe the change in force required to pull on a block of wood initially and once motion is established.

Equipment
Friction Block (Dynamic track accessories), Masses, Spring Scale
Support Equipment
Dynamics Track or long ramp