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
 Work and Energy
 Potential Energy
 Simple Machines
  video  - Inclined Plane
 Human Lever Arm
  video  - Conservative System
  video  - Pendulum with Moveable Peg
  video  - Loop - the - Loop
 Ball in Curved Tracks
 Maxwell's Wheel (Yo-Yo)
 Work Done by a Compressed Spring
  video  - Work Done on a Cart
 Energy Conversion and Conservation
 Rotational Motion
 Properties of Matter

Ball in Curved Tracks


To demonstrate that the kinetic energy of a ball dropped from the same height does not depend on the ball's trajectory but merely on the height difference.


Simultaneously release two balls from the same height following quite different paths. To demonstrate that the balls have had the same velocity while off their tracks, set the apparatus at the edge of the bench and observe that the balls' range on the floor is the same.


The holder ship is inside the can along with the balls.


  • Brachistochrone curve apparatus