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Two opposite 5 N forces form a couple with lines of action 0.4 m apart. The couple's moment is
A4 N m
B1 N m
C12.5 N m
D2 N m
Answer & Solution
Correct answer: D. 2 N m
Moment of a couple = F x separation = 5 x 0.4 = 2 N m, the same about any point.
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