Question detail
Describe how a smaller gear driven by a larger gear affects the rotation speed and turning effect.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Moments, levers and gears (physics only)
Question
Describe how a smaller gear driven by a larger gear affects the rotation speed and turning effect.
Answer
When a smaller gear is driven by a larger gear, the smaller gear rotates faster than the larger gear. This is because the larger gear has to turn more slowly to accommodate the smaller gear's faster rotation, resulting in a greater turning effect for the same input force.
Explanation
This question tests the understanding of the relationship between gear sizes and their effects on rotation speed and turning effects. It assesses the ability to explain mechanical advantage in gear systems.
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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