This short paper describes a useful teaching tool, ideal for demonstration purposes within the classroom or lab setting. It is based on the simple dynamic response of flexible cantilevers and evolves naturally from the underlying principles of a vibrating reed tachometer. Utilizing a 3D-printer, these ideas conveniently encompass the phenomenon of resonance in which all the cantilevers of a similar length respond in harmony when just one of their number is plucked.
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See supplementary material at https://doi.org/10.1119/1.5025037 for videos of the sympathetic resonators.
© 2018 American Association of Physics Teachers.
2018
American Association of Physics Teachers
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