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Torque Condition For Equilibrium

Purpose

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

Equipment

Pre-assembled as photographed.

Images

b2-23

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 therod will rotate.

References

(PIRA unavailable.)

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