Chapter 2: Q7DQ (page 496)
Is it possible to have a longitudinal wave on a stretched string? Why or why not? Is it possible to have a transverse wave on a steel rod? Again, why or why not? If your answer is yes in either case, explain how you would create such a wave.
Short Answer
The production of a longitudinal wave in a stretched string is not achievable. This is due to the string being very hard to compress throughout its length. A transverse wave will result from its bending.
A steel rod may produce transverse waves because steel has form flexibility.