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.

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

Load on a removable incline - Video

demonstration image
Catalog: 
1J30.10B
Location: 
3_1
Video Encyclopedia: Place a cart on a removable 30 degree incline.

Irregular Object Center of Mass

If an irregular object acts like a point mass then it should hang below the hand
Catalog: 
1J10.12A
Location: 
Ab5
Suspend an irregular object from several points and find the center of mass with a plumb bob.

Clothesline - Video

demonstration image
Catalog: 
1J30.25
Location: 
3_1
Video Encyclopedia: Hang a 5 newton weight from a line and pull on one end of the line with a spring scale.

Leaning tower of Pisa (loaded)

Catalog: 
1J11.105
Location: 
Ab5
Grey leaning tower with weighted red end. Red end can turn.

Pages