Question detail
Which option best applies gear for Levers and gears (physics only) in AQA GCSE Physics Forces?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Moments, levers and gears (physics only)
Question
- A. The rotation speed decreases — calculation focus for gear
- B. This confuses speed and velocity and does not answer Levers and gears (physics only).
- C. This is too vague because it does not use the force or motion quantity named in the objective.
- D. This reverses the physical cause and effect for Moments, levers and gears (physics only).
Answer
The correct answer is: The rotation speed decreases — calculation focus for gear
Explanation
The correct option is The rotation speed decreases — calculation focus for gear. The rotation speed decreases — calculation focus for gear is correct because it matches the approved learning objective to (Physics only) Describe how a smaller gear driven by a larger gear changes rotation speed and turning effect. This answer belongs to Levers and gears (physics only) within Moments, levers and gears (physics only), so it must use precise AQA GCSE Physics forces and motion vocabulary. The other options are wrong because they either confuse speed and velocity, omit the required force or motion condition, or move away from the exact subtopic being tested.
Common mistake
Gear speed vs. turning effect confusion
Students often think that a smaller gear driven by a larger gear both increases rotation speed and increases the turning effect, treating the two effects as the same.
Explain that the larger gear provides a greater turning effect (torque) but the smaller gear rotates faster; the two effects are inversely related and cannot both increase simultaneously.
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