Exam-style question
Try this first
Define free vibrations and forced vibrations in the context of oscillatory motion.
Model answer
What a good answer should say
- Free vibrations occur when a system oscillates at its natural frequency without any external force acting on it.
- Forced vibrations happen when an external force drives the system, causing it to oscillate at the frequency of the applied force.
Explanation
Why this works
This answer is strong because it clearly defines both concepts and highlights the key difference: the presence of an external force in forced vibrations. It also explains the conditions under which each type of vibration occurs, providing a comprehensive understanding of the topic.
Common mistake
No common mistake is linked to this question yet.