B2-23.HTML
B2-23: TORQUE CONDITION FOR EQUILIBRIUM

PURPOSE: To demonstrate that equilibrium of forces is an insufficient condition for static equilibrium.

DESCRIPTION: The weight of the rod is balanced by two equal weights hung over pulleys. While holding the rod fixed, move a weight from one side to the other. The force condition for equilibrium is still met, but the torque condition is not satisfied, and the rod will rotate.

SUGGESTIONS:

REFERENCES: (PIRA unavailable.)

EQUIPMENT: Pre-assembled as photographed.

SETUP TIME: None.


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