Coefficient of Friction

GIVEN: Assemble a modified Atwood’s machine as shown on the diagram.

The mass of block and the mass of hanger are given.

You may only use a meterstick.

Constraint: distance d > h

TASK: Estimate the coefficient of kinetic friction between the block

and the surface.

Include in lab report: energy bar chart(s) and

complete derivation of the equation to determine the coefficient of kinetic friction.

EXTENSION: How can you determine the validity of your answer?

Describe a second experiment that could be performed to determine the

coefficient of kinetic friction. Use only the block, meterstick, and an incline.

Include all the details of the experimental procedure, measurements to be taken,

equations that are needed, and calculations to be performed.

(Thanks to Dolores Gende for this activity)