Question detail
Forces and elasticity scenario: weight and normal contact force act on one object. Which answer best addresses Required practical: force and extension and the objective to describe how to measure the original length of a spring before adding loads?
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 the book on table scenario, apply spring to describe how to measure the original length of a spring before adding loads while keeping elastic versus plastic deformation separate.
- B. In the book on table scenario, mix up elastic versus plastic deformation and ignore spring.
- C. Use a general revision statement without applying Required practical: force and extension to the situation.
- D. Choose a different forces topic instead of explaining describe how to measure the original length of a spring before adding loads.
Answer
The correct answer is: In the book on table scenario, apply spring to describe how to measure the original length of a spring before adding loads while keeping elastic versus plastic deformation separate.
Explanation
The correct option is In the book on table scenario, apply spring to describe how to measure the original length of a spring before adding loads while keeping elastic versus plastic deformation separate.. It is correct because the scenario says weight and normal contact force act on one object, which must be interpreted through Required practical: force and extension. This directly supports the learning objective to describe how to measure the original length of a spring before adding loads. Use values 8, 14, and 15 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 elastic versus plastic deformation.
Common mistake
Measuring Spring Length
Students often forget to measure the original length of the spring without any loads, leading to incorrect extension calculations.
Always ensure to measure the original length of the spring before adding any loads to accurately calculate the extension.
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