FREE AND FORCED OSCILLATIONS(DEFS+EX)
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5 Terms
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free oscillations
A body is said to be freely oscillating if it oscillates without the interference of an external force.
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natural frequency
The frequency of these free vibrations is known as its natural frequency
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Forced vibrations
If a freely oscillating system is subjected to an external force then forced oscillations take place.
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examples of forced oscillations
when the mass of a simple pendulum is struck repeatedly
vibrations of a factory floor caused by running of heavy machinery
when loud music is produced by sounding wooden board of strings instruments
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driven harmonic oscillator
a physical system undergoing forced vibrations is known as driven harmonic oscillator
Note 
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