Exam-style question
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A spring with a spring constant of 150 N/m is compressed by 0.3 m. What is the elastic potential energy stored in the spring?.
- A.6.75 J
- B.11.25 J
- C.13.5 J
- D.20.25 J
Model answer
What a good answer should say
- 6.75 J
Explanation
Why this works
Using the formula Ee = 0.5 x k x e^2, we substitute the values: Ee = 0.5 x 150 N/m x (0.3 m)^2 = 6.75 J. Thus, the correct answer is 6.75 J.
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