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# Lesson Worksheet: Moment of a Couple Mathematics

In this worksheet, we will practice calculating the moment of a couple of two forces and the resultant of two or more couples.

**Q1: **

What is a couple?

- Aa pair of parallel forces with equal magnitude and the same line of action
- Ba pair of forces with equal magnitude
- Ca pair of parallel forces with equal magnitude and opposite direction which do not lie on the same line of action.
- Da pair of forces with the same magnitude and direction.

**Q4: **

is a horizontal light rod having a length of 60 cm, where two forces, each of magnitude 45 N, are acting vertically at and in two opposite directions. Two other forces, each of magnitude 120 N, are acting in two opposite directions at points and of the rod, where . If they form a couple equivalent to the couple formed by the first two forces, find the measure of the angle of inclination that the second two forces make with the rod.