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kort verslag natuurkunde zweving
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verslag over zweving, gewerkt met coach
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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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