Long answer·Standard multi-step (3/5)·Calculator allowed
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A string of length is fixed at both ends. The tension is and its linear mass density is .
Total: 4 marks
(a) Find the wave speed on the string. (1 mark)
(b) Find the fundamental frequency. (1 mark)
(c) Find the second and third harmonic frequencies. (1 mark)
(d) State the number of nodes in the third harmonic including the ends. (1 mark)
Something wrong with this item?