null
US
Entrar
Registre-se gratuitamente
Registre-se
Detectamos que o JavaScript não está habilitado no teu navegador. Habilite o Javascript para o funcionamento correto do nosso site. Por favor, leia os
Termos e Condições
para mais informações.
Próximo
Copiar e Editar
Você deve estar logado para concluir esta ação!
Inscreva-se gratuitamente
4049115
Standing WAVES
Descrição
A note on standing waves
Sem etiquetas
phy245
physics
200
Mapa Mental por
Kaitlin McNeil
, atualizado more than 1 year ago
Mais
Menos
Criado por
Kaitlin McNeil
mais de 8 anos atrás
16
0
0
Resumo de Recurso
Standing WAVES
modes
normal mode
A motion in which all particles of the string move sinusiodally w the same frequency
Fundamental frequency n=1, L=lambda/2
n= # of anti nodes
modes
linear resonator
n=#of antinodes
musical instruments may play the same fundamental frequency but have different undertones.
mathematical annalysis
1D
y(x,t) f(x) cos (wt+phi)
we can choose to say that the max displacement occurs at t=0 then phi=0
the 1D wave eqn can then be subbed in
thus f(x)=Asin(w/v x)+Bcos (w/v x)
Apply boundary conditions
A cannot =0
any function can be approximated by sim
General soln for taught string y(x,t)=Asin (npix/L)cos (wt)
Energy in a wave
K=u
small angle apptoximation sin theta = theta
∆S>∆x
super position of normal modes
when you activate one wave you are activating a multitude of standing waves, which is why we consider the summation see eqn 17
timber results from different wave shapes
by adding more modes we achieve better agreement esp w respect to the sharp corner
the first harmonic is most important
gob only interested in sin expansion
Energy of Vibration of a string
0
Quer criar seus próprios
Mapas Mentais
gratuitos
com a GoConqr?
Saiba mais
.
Semelhante
AQA Physics P1 Quiz
Bella Statham
GCSE AQA Physics - Unit 3
James Jolliffe
Using GoConqr to study science
Sarah Egan
GCSE AQA Physics 1 Energy & Efficiency
Lilac Potato
Waves
kate.siena
Forces and their effects
kate.siena
Forces and motion
Catarina Borges
Junior Cert Physics formulas
Sarah Egan
OCR Physics P4 Revision
Dan Allibone
P2 Radioactivity and Stars
dfreeman
Physics 1A - Energy
Zaki Rizvi
Explore a Biblioteca