Physics at the University of Virginia
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Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538

Physics Demo Manual

Demonstrations are cataloged according to PIRA Bibliography


Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.

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 Motion In One Dimension
 Motion In Two Dimensions
 Newton's First Law
 Newton's Second Law
 Newton's Third Law
 Statics Of Rigid Bodies
 Applications Of Newton's Laws
 Ladder Against a Wall
 Walking the Giant YoYo
 Weight Dependence of Friction
  video  - Contact Area Independence of Friction
 Coefficient of Friction
 Work and Energy
 Rotational Motion
 Properties of Matter

Weight Dependence of Friction


To demonstrate that friction forces depend on the normal force on the object.


Pull an empty wooden box on the bench with the spring scale. Repeat adding more weights into the box and observe that more force is required to move the box.


  • Weights
  • Spring Scale
  • Wooden Box