Stationary Waves on a String (AQA A-Level Physics): Flashcards

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Stationary Waves on a String
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First harmonic on string

Lowest freq, single loop, nodes at both ends

Wavelength at first harmonic

λ=2l\lambda = 2l

Mass per unit length formula

μ=ml\mu = \frac{m}{l}

Wave speed from gradient GG

v=2×Gv = 2 \times G

Tension in string formula

T=mgT = mg

Tension with 100g mass

0.9810.981 N

Wave speed using tension & mass per unit length

v=Tμv = \sqrt{\frac{T}{\mu}}

Graph axes for stationary wave experiment

Mean frequency ff vs 1l\frac{1}{l}

Initial string length in experiment

1.0001.000 m

Stabilisation time for signal generator

20 minutes

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