Code Number: 1R30.30

Demo Title: Shear - Spring Cubes, Crystal Lattice

Condition: Excellent

Principle: Shear

Area of Study: Mechanics

Equipment:

Matter Model by Pasco

Procedure:

Place a rubber pad on the lecture bench so that the underside of the model does not move when demonstrating. Push horizontally on the top edge of the model and note the lattice shear. Shear forces to the point of lattice fracture can be demonstrated. Note that there are two such cubes. One has weak springs and one has stiffer springs.

References:

John A. McClelland, "Stressful Situations", TPT, Vol. 38, # 7, Oct. 2000, p. 426.

1R30.30 - Shear - Spring Cubes - Crystal Lattice

1R30.30 - Dr. James Wetzel - PHYS 1611 - Shear - Spring Cube

Disclaimer

These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.

Instructional Resources and Lecture Demonstrations

1R30.30 - Shear - Spring Cubes, Crystal Lattice

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