Question

A nylon string of length L=8 m has cross-sectional area that varies with distance as A(x)=10-6(1+x/L), where A is in meters squared and x is in meters. The string is stretched between two rigid columns such that the tension in it is 110 N. Determine the time it takes for a transverse pulse in the string to travel from one end to the other. The density of nylon is 1.1 g/cm3.