My Dashboard

Lesson: Equivalent of a system of coplanar forces to a couple

In this lesson, you will learn the conditions for a system of coplanar forces to be equivalent to a couple. First, their resultant force must vanish (be zero). In addition, the sum of their moments about any point must not vanish.

Worksheet: Equivalent of a system of coplanar forces to a couple • 15 Questions

Q1:

is a square, where the five forces, measured in newtons, are acting on it as shown in the figure. If the system of forces is equivalent to a couple, determine and .

Q2:

is a square having a side length of 85 cm. Forces of magnitudes 30, 55, 30, and 55 newtons are acting along the square’s sides, and two equal forces of magnitude newtons, are acting at and in the directions shown in the figure. Find the couple equivalent to the system.

Preview