PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
Three pieces of string, each of length L, are joined end-to-end to make a combined string of length 3L. The first piece has mass per unit length μ1, the second has mass per unit length μ2=4μ1, and the third has mass per unit length μ3=4μ1.
(1) If the combined string is under tension F, how much time does a transverse wave take to travel the entire length 3L? Give your answer in terms of L, F, and μ1.
(2) Does your answer to part (a) depend on the order in which the three pieces are joined together? Explain.