Question:

The moment of a couple is given by

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Moment of a couple equals one force multiplied by the perpendicular distance between the two forces.
  • Force \(\times\) Area
  • Force \(\times\) Time
  • Force \(\times\) Inertia
  • Force \(\times\) Perpendicular distance
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The Correct Option is D

Solution and Explanation

Concept:
A couple consists of two equal and opposite parallel forces acting at different lines of action.

Step 1:
A couple produces a turning effect but no resultant force.

Step 2:
The moment of a couple depends on the magnitude of one force.

Step 3:
It also depends on the perpendicular distance between the two forces.

Step 4:
Therefore: \[ \text{Moment of couple}=F\times d \]

Step 5:
Hence, the correct answer is force multiplied by perpendicular distance. \[ \boxed{\text{Force \(\times\) Perpendicular distance}} \]
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