2. Statics and Mechanics

Moments And Couples — Quiz

Test your understanding of moments and couples with 5 practice questions.

Practice Questions

Question 1

A force of $100 \text{ N}$ is applied at an angle of $40^\circ$ to a lever arm at a distance of $2 \text{ m}$ from a pivot. What is the magnitude of the moment about the pivot?

Question 2

A uniform rectangular plate has a length of $4 \text{ m}$ and a width of $3 \text{ m}$. If the bottom-left corner is at the origin $(0,0)$, where is the centroid of the plate located?

Question 3

Two forces of $60 \text{ N}$ each act in opposite directions on a rigid body, with a perpendicular distance of $0.9 \text{ m}$ between their lines of action. What is the magnitude of the couple moment produced?

Question 4

A force of $80 \text{ N}$ is applied at a distance of $2.5 \text{ m}$ from a pivot at an angle of $30^\circ$ to the lever arm. What is the magnitude of the moment about the pivot?

Question 5

A uniform triangular plate has a base of $5 \text{ m}$ and a height of $4 \text{ m}$. Where is the centroid of the triangle located along the height from the base?