Exam-style question
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What is the angular frequency of a system with a frequency of 5 Hz? Scenario focus: use simple harmonic motion in a distinct A-Level Physics context and identify the relevant physical quantity before choosing the answer.
- A.10π rad/s
- B.5 rad/s
- C.2π rad/s
- D.20 rad/s
Model answer
What a good answer should say
- 10π rad/s
Explanation
Why this works
The correct answer is 10π rad/s. This option is correct for Periodic motion because it applies the simple harmonic motion idea in the stem and keeps the relevant quantity, unit, and physical conclusion together.
The alternatives either use a neighbouring formula, omit a required variable, or describe a different physical situation.
Common mistake
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