Balancing 6 Nails on 1
Materials: ★☆☆ Easy to get from supermarket or hardware store
Difficulty: ★☆☆ Can be easily done by most teenagers
Safety: ★☆☆ Minimal safety procedures required
Categories: Force
Alternative titles: Easy Nail Balancing Trick
Summary
This activity demonstrates how nails can be arranged and balanced in a surprising way by carefully interlocking them and placing the arrangement on top of a single upright nail. It is a fun puzzle that teaches about balance, center of mass, and stability.
Procedure
Gather several nails of equal size (about 10 works well) and a block of wood.
See Links below for how to balance them.
Links
Variations
Try using more nails to increase difficulty.
Use different lengths or weights of nails to see how balance changes.
Challenge friends or family to figure out the trick without explanation.
Safety Precautions
Handle nails carefully to avoid scratches or punctures.
Have adult supervision if younger children are attempting the trick.
Ensure the upright nail in the wood is secure before balancing.
Questions to Consider
Why does the arrangement stay balanced on just one nail? (Because the nails are interlocked, their combined center of mass is directly above the supporting nail.)
What happens if the nails are not evenly arranged? (The center of mass shifts, causing the structure to tip over.)
How is this trick similar to balancing other objects, like stacking cards or building towers? (All rely on distributing weight and aligning the center of mass over the support point.)