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Q: What physical principle is used by Jim when he pumps in rhythm with the natural frequency of the playground swing?
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What physics principle is used when pumping your legs in rhythm with the natural frequency of a swing?

Resonance - when pumping a swing in rhythm with its natural frequency, it produces larger amplitudes.(def. - occurs when the frequency of a vibration forced on an object matches the object's natural frequency and a dramatic increase in amplitude occurs)


What physics principle is used by a child on a swing when they pump in rhythm with the natural frequency of the swing?

resonance


What is the meaning of the natural frequency of a body?

The Natural frequency is the frequency at which Resonance(maximum amplitude) occurs.


The lowest natural frequency is called the overtone?

No, the lowest natural frequency is called the fundamental.


What is Darwins principle?

The principle of evolution by means of natural selection.


When a sound wave causes an object to vibrate at its natural frequency it is?

vibrate at its natural frequency. WHS AOEC


When a sound wave causes an object to vibrate a its natural frequency is?

vibrate at its natural frequency. WHS AOEC


What is the difference between natural frequency and natural cyclic frequency?

numbers of cycle per unit time.


What is the relationship of the frequency with the fundamental in the square wave frequency response?

The natural frequency of the spring refers to its frequency when hit or struck. Its lowest frequency is called fundamental frequency. For a spring, the 1st mode of natural frequency is fundamental frequency.


What is the frequency at which a system oscillates when it is disturbed called?

Natural Frequency


Do resonant frequency and natural frequency have the same meaning?

Yes.


What is it called when the frequency of sound source matches the natural frequency of a receiver?

That is the resonant frequency.