Resonance and Standing Waves on Stretched Strings (Leaving Cert Physics): Quizzes

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Resonance and Standing Waves on Stretched Strings
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What is natural frequency?

Frequency object vibrates at naturally

When does resonance occur?

When driving frequency matches natural f

What happens to energy transfer at resonance?

Energy transferred most efficiently

What are standing waves on a stretched string?

Patterns that appear stationary

What are nodes in standing waves?

Points with zero displacement

What is the distance between two consecutive nodes?

λ2\frac{\lambda}{2}

What is the fundamental frequency?

Lowest frequency string can vibrate at

What is the frequency of the third harmonic if fundamental frequency is ff?

3f3f

How does doubling the string length affect frequency?

Halves the frequency

By what factor must tension increase to double the frequency?

4

How does increasing mass per unit length affect frequency?

Decreases frequency

What is the formula for fundamental frequency of a stretched string?

f=12lTμf = \frac{1}{2l}\sqrt{\frac{T}{\mu}}

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