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Fascinating Finger Balance—Demonstration Kit

By: The Flinn Staff

Fascinating Finger Balance Physical Science and Physics Demonstration Kit
heavy plastic tube, plastic tubing
Fascinating Finger Balance Physical Science and Physics Demonstration Kit
heavy plastic tube, plastic tubing
Item #: AP6640 

Price: FREE

Temporarily out of stock; call for availability.

Fascinating Finger Balance Demonstration Kit for physical science and physics is a simple and seemingly paradoxical device that demonstrates the center of gravity.

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Product Details

Here’s a paradox—a device that remains balanced when a heavy plastic tube dangles from one end while being supported at the opposite end by a single fingertip. Remove the tube and the device falls. How can this be? It’s center of gravity! This simple device will be a real show-stopper as you introduce your students to the concept of center of gravity. Includes demonstration instructions.

Concepts: Center of gravity, balance, stability.
Time Required: 15 minutes

Specifications

Materials Included in Kit: 
Plastic tubing, ¼", 3
Tear-dropped shape balance device


Correlation to Next Generation Science Standards (NGSS)†

Science & Engineering Practices

Asking questions and defining problems
Developing and using models
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS2.A: Forces and Motion
MS-PS2.B: Types of Interactions
HS-PS2.A: Forces and Motion
HS-PS2.B: Types of Interactions

Crosscutting Concepts

Systems and system models
Stability and change

Performance Expectations

HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
HS-PS1-2: Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
MS-PS2-2: Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object