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Center of Gravity—Demonstration Set

By: The Flinn Staff

Item #: AP7068 

Price: $59.95

In Stock.

With the Center of Gravity Demonstration Kit for physical science and physics, perform our most popular center of gravity demonstrations—all available in one complete set.

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Product Details

Balance your physical science curriculum with our most popular center of gravity demonstrations—all available in one complete set! Quickly show your students how to locate the center of gravity of an object using a hanging plumb line. Watch the object rotate smoothly when spun around its center of gravity, but lopsidedly when spun at other locations. Locate the center of gravity of an irregular foam shape, and mark it with a white dot. Toss the foam object into the air and observe parabolic path of the white dot while the object as a whole appears to wobble. Defy gravity with the Balancing Bottle and Finger Balance. Four demonstrations are provided, and all the materials are completely reusable. Teacher demonstration notes are included.


Materials Included in Kit: 
Binder clip, ¾", 2
Black dry erase marker, wedge tip
Bottle balance beam
Center of gravity foam cutout
Dowel rod with hook, green
Plastic tubing ¼", 3
Polygon 1, irregular pentagon, with holes, 11" x 12"
Push pins, 6
Sinker #6 swivel, ½ oz, 2
Soda bottle with cap, 2 L
String, thin, ball of ⅙ lb, 331 m
Tear-dropped shape balance device
Velcro tabs, hooks, 4

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models
Obtaining, evaluation, and communicating information
Planning and carrying out investigations

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

Energy and matter
Systems and system models
Cause and effect
Structure and function

Performance Expectations

MS-PS2-4: Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects
HS-PS2-6: Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.