Two identical piano strings of length 0.750 m are each, tuned exactly to 500 H z . The tension in one of the strings is then increased by 21 % . If they are now struck, what is the beat frequency between the fundamental mode of the two strings?

Question

Two identical piano strings of length 0.750 m are each, tuned exactly to 500 H z . The tension in one of the strings is then increased by 21 % . If they are now struck, what is the beat frequency between the fundamental mode of the two strings?, 45, 50, 60, 40

MARKS App · Accepted Answer

f 1 = 1 2 l T μ = 500 f 2 = 1 2 l 1.21 T μ = 1.1 500 f 2 - f 1 = 50

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