Question detail
How is the spring constant measured?
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. In newtons per metre
- B. In joules per kilogram
- C. In kilograms per second
- D. In newtons per second
Answer
In newtons per metre
Explanation
The spring constant is defined as the force required to extend or compress a spring by one metre, hence it is measured in newtons per metre (N/m).
Common mistake
Misunderstanding Gradient Interpretation
Students often confuse the gradient of a force-extension graph with the total force applied, rather than understanding it represents the spring constant.
To fix this, students should practice calculating the gradient from the linear section of the graph and relate it directly to the spring constant, reinforcing the concept that the gradient indicates stiffness.
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