Exam-style question
Try this first
An object is in equilibrium under the action of three forces: 5 N to the right, 3 N to the left, and an unknown force. Calculate the magnitude and direction of the unknown force.
Model answer
What a good answer should say
- The unknown force is 2 N to the right.
Explanation
Why this works
This question assesses the understanding of equilibrium and vector addition. The strong answer shows the ability to apply the principle of moments and solve for the unknown force, demonstrating a clear understanding of vector diagrams.
Common mistake
No common mistake is linked to this question yet.