Two forces each of 4 N act on the opposite sides of a rectangular plate...

WAEC 1990

Two forces each of 4 N act on the opposite sides of a rectangular plate as shown in the diagram above. Calculate the magnitude of g the couple acting on the plate.

A. 6.4 Nm
B. 3.2 Nm
C. 1.6 Nm
D. 0.8 Nm
E. 0.0 Nm

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Correct Answer: Option C

Explanation

couple moment = F x d = 4 x 0.4 = 1.6Nm

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Two forces each of 4 N act on the opposite sides of a rectangular plate...

Correct Answer: Option C

Explanation

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