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- Friction blocks can be dragged on the lecture bench-top using a scale. Additionally, by flipping the block over onto one of its edges, one can demonstrate that the frictional force between two sliding surfaces is independent of the area of contact. Further, by stacking identical blocks on top of the sliding block, the spring scale indicates that the frictional force is a function of the normal force applied by the sliding object to the plane surface. And finally, to demonstrate the dependence of the coefficient of friction (both static and dynamic) on the nature of the sliding surfaces, sandpaper, and rubber have been glued onto some of the surfaces.
- You will need a dial scale (Shelf 55-57)
- Can use an inclined plane to show how different surfaces have different amounts of friction
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