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

See procedure.
Code Number:
Demo Title:
Shear - Spring Cubes, Crystal Lattice
Area of Study:
Matter Model by Pasco

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. 

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

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