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Spooling Around with Physics—Demonstration Kit

By: The Flinn Staff

Item #: AP6641

Price: $11.20

In Stock.

Spooling Around with Physics Demonstration Kit for physical science and physics investigates the unusual motion of a spool pulled by a string. 

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Product Details

Demonstrate the unusual motion of a spool pulled by a string. Will the spool roll toward the pull or away from the pull? Or perhaps it won’t roll at all. It all depends on the angle of the string. What about the spool’s diameter or weight—will they make a difference? Test these variables as you teach about torque and balanced forces that act on a pulled spool. A great activity to perform when discussing free-body diagrams. Includes detailed demonstration instructions. All materials are reusable.

Concepts: Torque, frictional force, free-body diagrams, discrepant events.
Time Required: 15 minutes


Materials Included in Kit: 
Machine screw hex nut, ⅜"-16
Spool, plastic, 1¾" x 2⅛" x 1.12"
Spool, plastic, 3½" x 3" x 1.12"
String, thin, ball of ⅙ lb, 331 m