PURPOSE: To illustrate different coefficients of friction.

DESCRIPTION: As the inclined plane angle is steadily increased, the three blocks begin to slide in the following order: (1) teflon, (2) styrofoam, and (3) rubber.

SUGGESTIONS:

See Question of the Week #133 for information on using this demonstration to enhance class involvement.

REFERENCES: (PIRA 1K20.35)

EQUIPMENT: Inclined plane with rubber, styrofoam, and teflon blocks.

SETUP TIME: None.