AQA A-level PHYSICS Paper 3 Section A QP JUNE 2024 (41pages)
Processing
When the hammer hits end L, a sound wave travels along the steel rod and is reflected at end R.
When the wave returns to L the rod bounces away from the hammer and the circuit is broken.
Figure 3 shows the waveform produced by the brief contact between the hammer and L.
Note that the waveform has now been centred vertically.
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