1J Statics of Rigid Bodies

Laded Beam (Instructor version)

Catalog: 
1J40.40E
Location: 
A plank is supported by a bathroom scale at each end. The instructor then walks along the plank while having students note the force measured by the scales.

One Rope and Three Weights

The middle weight is increased.  ASU copyright
Catalog: 
1J30.26
Location: 
Ab6
A rope is tied to a pole and a heavy weight hangs from a pulley at the other end. There are protractors to measure the deflection of the rope. In the middle a small weight is applied which easily moves the heavy weight.

Balancing bird

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

Loaded beam/bridge - Video

demonstration image
Catalog: 
1J40.40C
Location: 
3_1
Video Encyclopedia :A plank rests on two spring scales forming a bridge. Move a toy truck across.

Tightrope walking - Video

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

Robervball balance - Video

demonstration image
Catalog: 
1J40.50
Location: 
3_1
Video Encyclopedia :Neutral equilibrium is maintained at any position on the platform.

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.

Double cone on an inclined plane - Video

Image copyrighted by The Education Group and used by permission.
Catalog: 
1J11.50B
Location: 
3_1
Video Encyclopedia: The double cone appears to roll uphill.

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

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