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Statement of a problem № 2774

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A metal rod 40 cm long is dropped, end first, onto a wooden floor and rebounds into the air. Compressional waves of many frequencies are thereby set up in the bar. If the speed of compressional waves in the bar is 5500 m/s, to what lowest-frequency compressional wave will the bar resonate as it rebounds?

Solution:
A metal rod 40 cm long is dropped, end first, onto a wooden floor and rebounds i

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