Question detail
In a force-extension graph, what does the gradient represent?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Forces and elasticity
Question
- A. The spring constant.
- B. The total force applied.
- C. The total extension.
- D. The energy stored in the spring.
Answer
The spring constant.
Explanation
The gradient of the straight-line section of a force-extension graph represents the spring constant, indicating how stiff the spring is.
Common mistake
Identifying Proportionality
Students often confuse the straight-line section of a force-extension graph with non-linear sections, leading to incorrect conclusions about proportional behaviour.
To fix this, students should focus on identifying the straight-line section clearly and understand that it indicates a direct proportionality between force and extension, ensuring they differentiate it from any curves present in the graph.
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