Discover how to find the center of gravity by balancing cardboard cutouts of irregular shapes on a pencil point. This project explores how different shapes distribute weight and balance.
If a cardboard shape is balanced on a pencil point, then the center of gravity is directly above the pencil point.
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Draw and cut out different irregular shapes from cardboard.
Mark a few points along the edges of each shape.
Use a pencil to balance the shape at each marked point.
Observe which point allows the shape to balance perfectly.
Repeat the process for each shape.
Use a ruler to draw lines connecting the balance points.
Identify the intersection of these lines as the center of gravity.
Record your findings and compare between different shapes.
The center of gravity for each shape is the point where it balances perfectly on the pencil. This point will vary depending on the shape's design and weight distribution.
Shape of the cardboard
Location of the center of gravity
Material of the shape, Size of the shapes, Testing conditions
Handle scissors carefully to avoid cuts.
Display each shape and its center of gravity on a board.
Use clear diagrams to show the balance points and lines drawn.
Provide a simple explanation of why the center of gravity is important.
It's the point where the entire weight of an object appears to be concentrated.
For irregular shapes, the center of gravity can be outside due to uneven weight distribution.
Yes, but cardboard is sturdier and easier to balance.
