Exam-style question
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In which scenario would you expect to see elastic deformation rather than plastic deformation?.
- A.A rubber band being stretched.
- B.A metal rod being bent beyond its yield point.
- C.A clay sculpture being molded.
- D.A glass rod being shattered.
Model answer
What a good answer should say
- A rubber band being stretched.
Explanation
Why this works
Elastic deformation is observed in materials like rubber bands, which can stretch and return to their original shape when the force is removed. In contrast, plastic deformation occurs in materials that do not return to their original shape after the stress exceeds their yield strength, such as metals when bent or clay when molded.
Understanding these behaviors is crucial for applications in material design and engineering.
Common mistake
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