Experiment Mk-01

Force of Friction

Description: A dial balance is connected to a wooden block that is pulled across a tabletop.  The block can be turned on different edges to show the independence of frictional forces on area. The blocks can be stacked and pulled by the bottom block to show the effects of changes in mass. A second block with a different surface (such as sandpaper) can be used to show the effects of different materials in the area of contact between the table and the block.


Single bare wooden block being pulled.


Stacked blocks being pulled only one touches table.


Two blocks being pulled, both are on table.


Materials: Dial balance, blocks, sandpaper, string


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This page was last updated on Friday August 15, 2008 8:37 PM