Doppler effect from bungee jumping physicist · CAP 2003 #23
Physics
Problem
For the sake of science a physicist jumps attached to the end of a bungee cord, carrying sound measuring equipment. As he swings up and down vertically with a period of 6.0 s, he monitors the frequency of a sound source on the ground directly below him, and observes a difference of 84 Hz between the maximum and minimum frequency of the source. If the source emits at a constant 1370 Hz, and assuming no significant attenuation of his oscillations over the duration of the measurements, the amplitude of his oscillations is closest to
(a) 10 m;
(b) 20 m;
(c) 32 m;
(d) 15 m.