Exam-style question
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Which of the following statements about simple harmonic motion is true?.
- A.The total energy remains constant during the motion
- B.The total energy decreases over time
- C.The total energy increases over time
- D.The motion is always in one direction
Model answer
What a good answer should say
- The total energy remains constant during the motion
Explanation
Why this works
In simple harmonic motion, the total mechanical energy is conserved, oscillating between kinetic and potential energy, thus remaining constant.
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