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Solution: In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide greater intensity. For example, the note at 151 Hz has two strings at this pitch. If one string slips from its normal tension of 637 N to 521 N, what beat frequency will be heard when the two strings are struck simultaneously?

Problem

In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide greater intensity. For example, the note at 151 Hz has two strings at this pitch. If one string slips from its normal tension of 637 N to 521 N, what beat frequency will be heard when the two strings are struck simultaneously?