(a) Formulate an appropriate boundary condition, to replace Eq. 9.27, for the case of tw...

(a) Formulate an appropriate boundary condition, to replace Eq. 9.27, for the case of two strings under tension T joined by a knot of mass m.

(b) Find the amplitude and phase of the reflected and transmitted waves for the case where the knot has a mass m and the second string is massless.

Reference equation 9.27