Exam-style question
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A mass-spring system is oscillating in simple harmonic motion. If the mass is 0.5 kg and the spring constant is 200 N/m, calculate the time period of the oscillation. Scenario focus: use simple harmonic motion 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 time period of the oscillation is 0.63 seconds.
Explanation
Why this works
The correct answer is The time period of the oscillation is 0.63 seconds.. 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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