1J20 Stable, Unstable and Neutral equilibrium

Chair on pedestal - Video

demonstration image
Catalog: 
1J20.51
Location: 
3_1
Video Encyclopedia: Hide heavy weights in the ends of a chair's legs so it will balance on a verticle rod placed under the seat.

Broom stand - Video

demonstration image
Catalog: 
1J20.55
Location: 
3_1
Video Encyclopedia :Spread the bristles and a straw broom will stand upright.

Wine Butler

The center of mass must be over the support.
Catalog: 
1J20.60
Location: 
Ab5
A center of gravity demonstration

Balance the cone - video

demonstration image
Catalog: 
1J20.11
Location: 
3_1
Video Encyclopedia: Balance a cone, show a block is stable and a sphere is neutral.

Balancing bird

demonstration image
Catalog: 
1J20.36
Location: 
Ab5
A bird with weighted wing tips balances on its beak

Tightrope walking - Video

demonstration image
Catalog: 
1J20.45B
Location: 
3_1
Video Encyclopedia: A toy clown rides a unicycle on a wire.