Exam-style question
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Which of the following best describes the relationship between free and forced vibrations?.
- A.Both are types of oscillations that can occur in a system.
- B.Free vibrations always have a higher amplitude than forced vibrations.
- C.Forced vibrations can only occur in mechanical systems.
- D.Free vibrations are always periodic, while forced vibrations are not.
Model answer
What a good answer should say
- Both are types of oscillations that can occur in a system.
Explanation
Why this works
Both free and forced vibrations are types of oscillations that can occur in a system. The key difference is that free vibrations occur without external forces, while forced vibrations are maintained by an external force.
Both types of vibrations can be observed in various physical systems, but they apply under different conditions. Therefore, the correct option accurately describes their relationship.
Common mistake
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