Exam-style question
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A force of 10 N is applied at a distance of 2 m from a pivot. What is the moment about the pivot?.
- A.20 Nm
- B.5 Nm
- C.15 Nm
- D.10 Nm
Model answer
What a good answer should say
- 20 Nm.
- the correct option
Explanation
Why this works
The correct answer is 20 Nm. This supports Calculate moments of forces about a point.
in Moments because it uses the required mechanics relationship directly. The other options are less suitable because they confuse a different force, motion, energy, momentum, or materials concept.
Common mistake
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