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kort verslag natuurkunde zweving

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verslag over zweving, gewerkt met coach

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Uploaded on
April 3, 2022
Number of pages
8
Written in
2021/2022
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Book review

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Verslag
“experiment, zweving”
Kim de Bruijn, Chelsea Ebecilio 25-2-2022
& Tanya Trouwborst, 5Vnat1

Inhoud
Onderzoeksvraag....................................................................................................................................1
Theorie...................................................................................................................................................1
Hypothese..............................................................................................................................................1
Onderzoek individuele stemvorken........................................................................................................2
Onderzoek zweving................................................................................................................................5
Conclusie................................................................................................................................................7
Evaluatie.................................................................................................................................................8

Onderzoeksvraag
Hoe hangt de zwevingsfrequentie samen met de frequenties van de twee bronnen?

Theorie
In de theorie blijven beide frequenties bestaan en bestaat de zweving uit een afwisseling van
constructieve en destructieve interferenties. Het Coach-beginmodel ‘zweving’ zal worden aangepast
tot een model met twee trillingsbronnen: de ene met 440 Hz en de andere met 420 Hz. Vervolgens
zal er een oscillogram van beide trillingen samen worden gemaakt en hiervan zal dan weer met FFT
een frequentiespectrum worden gemaakt.

Hypothese
Oscillogram bron 1




Trillingstijd 10 trillingen: T = 0,0227 s
Trillingstijd 1 trilling: T = 0,02273/10 = 0,00227 s
Frequentie f = 1/T à f = 1/0,00227 =441 Hz

, Oscillogram bron 2




Trillingstijd 10 trillingen: T = 0,0238 s
Trillingstijd 1 trilling: T = 0,0238/10 = 0,00238 s
Frequentie f = 1/T à f = 1/0,0238 = 420 Hz

Dus de zwevingsfrequentie is: 441 – 420 = 21 Hz

Frequentiespectrum bron 1 en 2




Eerste piek bij 420 Hz, tweede piek bij 439 Hz

Onderzoek individuele stemvorken
Oscillogram één stemvork zonder klem




Trillingstijd 10 trillingen: T = 0,0234 s
Trillingstijd 1 trilling: T = 0,0234/10 = 0,00234 s
Frequentie f = 1/T à f = 1/0,00234 = 427 Hz
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