What is forced vibrations?
Answers
Forced vibrations occur if a system is continuously driven by an external agency. A simple example is a child's swing that is pushed on each downswing. Of special interest are systems undergoing SHM and driven by sinusoidal forcing. This leads to the important phenomenon of resonance.
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Answer:
Forced Vibration:-
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What is forced vibration ?
Answer:-Vibration of a body which takes place under the influence of an external force acting on it .
The frequency of vibration changes with change in the frequency of applied force.
the amplitude of vibration depends on the frequency of applied force.
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Factors affecting the forced vibration:-
- The frictional force
- The external periodic force
- The restoring force
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Some of the examples of forced vibration:-
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(the example contains explanation:-)
- When a person plays a guitar string by his finger the vibration in them cause forced vibration in the air in closed in its hollow box.
- When the stem of a vibrating tuning fork is pressed against the top of a table the turning fork producers forced vibration in the table tops. The table top has a much larger vibration area then turning for so the forced vibration of the table topper send forth a great energy and the person was a loud sound than the pursuit by the tuning fork.
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