Question

Example of Resonance ​

Answer 1

$\bold{ANSWER}$

In sonometer experiment, the paper rider placed on the stretched string between the knife edges flies off due to the resonant oscillations of the string when the stem of oscillating tuning fork is pressed on the top face of the sonometre box this happens when the frequency of wire between the knife edges matches with the frequency of tuning fork.

A loud sound is heard, due to the resonant oscillations of air column when the exited tuning fork is held at the open end of the pipe .This happens when frequency of air column matches with the frequency of tuning fork.

Answer 2

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$\mathfrak {\huge {\bold {EXAMPLES.....}}}$

1. Swing

A playground swing is a familiar example of the resonance. When we push the swing, it swings forward and backwards. If a series of regular pushes are given to the swing, its motion can be built enormously. The man who is pushing the string has to match the timing of the swing. The pusher has to sync with the timing of the swing. This cause the motion of the swing to have increased amplitude and the swing will go higher. Once when the swing reaches its natural frequency of oscillation, a gentle push to the swing helps it maintain that amplitude of swing throughout due to resonance. We call this in-sync motion, Resonance. But, if pushes are given irregular, the swing will hardly vibrate, and this out-of-sync motion will never lead to resonance, and the swing will not go higher.

2. Guitar

A Guitar makes sound entirely by vibration. In an acoustic guitar, when you pluck a string, it vibrates back and forth, transmitting sound energy into the hollow wooden body of the guitar, making it (and the air inside) resonate and amplifying the sound (making it considerably louder).

Whereas in an electric guitar, when the musician strike to the string, it oscillates and the electromagnetic device in the guitar turns this oscillation into an electric signal that it sends to the amplifier. The amplifier sends oscillations on to the speaker. If the frequency of the speakers matches to vibration of the guitar, it results in the sound which is called audio feedback.

3. Pendulum

Pendulum works the same as swing. If we push the pendulum it will move back and forth. continuous pushing at the proper timing will cause an increase of the speed of the pendulum to move back and forth. If regular pushes are given to the pendulum, its motion can be built enormously.

4. Singer Breaking A Wine Glass

Breaking of glass- resonance

Have u ever watched or heard about shattering of a wine glass in orchestras? If yes then this is all due to resonance. The natural frequency of a glass or any other object is determined by its shape and composition. If the singer’s voice, hits the resonant frequency of the wine glass, transfer of energy will occur. However, the full transfer of energy can break the glass, causing it to shatter.

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