A string with one end fixed as U(x=0,t)=0. The other end is attached to a massless ring which moves frictionlessly along a rod at x=L(adsbygoogle = window.adsbygoogle || []).push({});

a) Explain the boundary condition at x=L should be d/dx U(x,t) = 0.

b) Find the normal modes for the wave equation d2/dt2 U(x,t) = c2 * d2/dx2 U(x,t) with the above boundary conditions.

c) Plot the three lowest frequency normal modes.

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# Homework Help: Normal modes of a string NEED HELP

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