A marine research probe is anchored to the seabed by a steel tether. Wind-induced currents cause transverse stationary waves to form on the tether. Initially, the tension in the tether is TTT, and the fundamental frequency (first harmonic) of these oscillations is f0f_0f0.
To stabilize the probe against rising waves, the winch system increases the tension in the tether to 25T 25T\,25T without altering the length or mass of the tether.
Which harmonic of the tether has a frequency of 15f0 15f_0\,15f0 after this adjustment?
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25 exam-style questions on AQA A Level Physics Progressive and stationary waves, covering Progressive waves, Longitudinal and transverse waves, and Principle of superposition of waves and formation of stationary waves. Each one has a worked solution and a mark scheme showing where the marks go.