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FORCE & EQUILIBRIUM



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overhang-blocks
Overhang Blocks
Price: $23.00
A Challenge in Careful Logical Thought
center-of-gravity-paradox
Center of Gravity Paradox
Price: $36.00
A Fun Way to Demonstrate Stability
trebuchet-kit
Trebuchet Kit
Price: $17.00
Demonstrate Physics Principles With This Miniature Medieval Siege Engine
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