1. ROTATIONAL EQUILIBRIUM THE SECOND CONDITION OF EQUILIBRIUM

4. DIAGRAM OF CROSS WRENCH F F AXIS OF ROTATION

7. The moment arm of a force is the perpendicular distance from the line of action of the force to the axis of rotation.

8. THE MOMENT ARM A B C F F F

9. EXAMPLES OF MOMENT ARMS and Sign Convention NEGATIVE TORQUE F r

10. EXAMPLES OF MOMENT ARMS and Sign Convention POSITIVE TORQUE F r

11. EXAMPLES OF MOMENT ARMS and Sign Convention POSITIVE TORQUE F r

12. EXAMPLES OF MOMENT ARMS and Sign Convention POSITIVE TORQUE F r

26. Sketch of problem 300 N 200 N 400 N 6.00 m 4.00 m 4.00 m 12 m A B

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