Question detail
Moments, levers and gears (physics only) scenario: a force meter stretches a spring and the extension is measured. Which answer best addresses Levers and gears (physics only) and the objective to (Physics only) Describe how a larger gear driven by a smaller gear changes rotation speed and turning effect?
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. In the spring test scenario, apply gear to (Physics only) Describe how a larger gear driven by a smaller gear changes rotation speed and turning effect while keeping speed versus velocity separate.
- B. In the spring test scenario, mix up speed versus velocity and ignore gear.
- C. Use a general revision statement without applying Levers and gears (physics only) to the situation.
- D. Choose a different forces topic instead of explaining (Physics only) Describe how a larger gear driven by a smaller gear changes rotation speed and turning effect.
Answer
The correct answer is: In the spring test scenario, apply gear to (Physics only) Describe how a larger gear driven by a smaller gear changes rotation speed and turning effect while keeping speed versus velocity separate.
Explanation
The correct option is In the spring test scenario, apply gear to (Physics only) Describe how a larger gear driven by a smaller gear changes rotation speed and turning effect while keeping speed versus velocity separate.. It is correct because the scenario says a force meter stretches a spring and the extension is measured, which must be interpreted through Levers and gears (physics only). This directly supports the learning objective to (Physics only) Describe how a larger gear driven by a smaller gear changes rotation speed and turning effect. Use values 5, 7, and 18 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error speed versus velocity.
Common mistake
Misunderstanding Gear Functionality
Students often think that a larger gear always increases the speed of rotation when driven by a smaller gear.
Explain that a larger gear driven by a smaller gear actually decreases the rotation speed but increases the turning effect (moment).
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