Lesson: Equilibrium of a Rigid Body under Coplanar Couples

Mathematics

In this lesson, we will learn how to investigate the equilibrium of a rigid body under the action of two or more coplanar couples.

Video

17:17

Sample Question Videos

09:44
02:38
05:22

Worksheet

Q1:

FIll in the blank: If the couples and are in equilibrium, where , then .

Q2:

The moments, and , of two couples satisfy the equation . Which of the following is therefore true?

Q3:

In the figure shown, forces of magnitudes 13, 13, , , 289, and 289 newtons are acting on a rod. Given that the rod is in equilibrium and that is measured in centimeters, find the length of the rod.

Preview