Two forces of 30N each act vertically upward and downward respectively on two ends of uniform rod of length 1m pivoted freely at its center. Determine the resultant moment of force about the midpoint of rod.
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Explanation:
Figure shows a rod AB of length 1 m is pivoted at centre C. At A, 2N force acting upward and at B 2N force acing downward.
If we take moment of the forces about C, both moments are clockwise moments.
Moment at A = 2N × 0.5 m = 1 N m
Moment at B = 2N × 0.5 m = 1 N m
Resultant moment = 2 N m
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