Physics
What are the damped vibrations? How do they differ from free vibrations? Give one example of each.
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Answer
The periodic vibrations of a body of decreasing amplitude in presence of a resistive force are called the damped vibration.
In the case of damped vibrations, the amplitude of vibrations gradually decreases with time and ultimately it ceases whereas in the case of free vibrations the amplitude of vibrations remains constant and it continues forever.
Example of damped vibration — A tuning fork when stroked on a rubber pad, executes the damped vibrations in air.
Example of free vibration — The vibrations of a constant amplitude can only occur in vacuum. Since, in practice, it is very difficult to have vacuum. Hence, it is very difficult to realise such vibrations in practice.
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Related Questions
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