Two forces of equal magnitude F=50 N act in opposite directions with perpendicular separation d=0.4 m forming a couple. Its moment about ANY point in the plane is:

Home › MCQs › Mechanical Engineering › Question #2539

Mechanical Engineering QUESTION #2539

Question 1

Two forces of equal magnitude \(F=50\) N act in opposite directions with perpendicular separation \(d=0.4\) m forming a couple. Its moment about ANY point in the plane is:

\(20\) N·m — same about every point✔️
\(20\) N·m — only about the midpoint
Depends on the chosen reference point
Zero since the net force is zero

Correct Answer Explanation

A couple has a moment \(M=F\cdot d=50\times0.4=20\) N·m. The defining property of a couple is that its moment is identical about every point in space, making the couple a free vector.

More Options