Exam-style question
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A pendulum has a mass of 0.5 kg and swings with a period of 2 seconds. Calculate the angular frequency of the pendulum. Scenario focus: use ideal gas reasoning in a distinct A-Level Physics context and identify the relevant physical quantity before choosing the answer.
Model answer
What a good answer should say
- The angular frequency of the pendulum is 3.14 rad/s.
Explanation
Why this works
The correct answer is The angular frequency of the pendulum is 3.14 rad/s.. This option is correct for Periodic motion because it applies the ideal gas reasoning 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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