- #1
vkash
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Homework Statement
consider a simple sinosudial wave traveling in a string with equation y=A*sin(wt-kx). Draw it's graph for t=0. It's simple sin curve. Now i am required to find out the direction of velocity of particle in between x=λ/4 to x=λ/2.
IF T is time period of oscllations then
w is 2*pi/T. k=2*pi/λ, λ is wavelength.
2. The attempt at a solution
velocity of particle is dy/dt.doing partial differentiation of the above equation.
v=dy/dt=Aw*cos(wt-kx). If we draw it's curve it will like a cos curve for all the points in betwen x=λ/4 to x=λ/2 it is in negative direction so velocity of these particles should negative but it is not so. Velocity of particle should +ve. where am i doing it wrong.
thanks...