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Grade 10Wave Motion

A tuning fork of frequency 440 Hz is attached to a long string of linear mass density 0.01 kg m-1 kept under a tension of 49 N. The fork produces transverse waves of amplitude 0.50 mm on the string. (a) Find the wave speed and the wavelength of the waves. (b) Find the maximum speed and acceleration of a particle of the string. (c) At what average rate is the tuning fork string. (c) At what average rate is the tuning fork transmitting energy to the string?

Profile image of Hrishant Goswami
12 Years agoGrade 10
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1 Answer

Profile image of Aditi Chauhan
12 Years ago
Sol. f = 440 Hz, m = 0.01 kg/m, T = 49 N, r = 0.5 * 10–3 m a) v = T /m = 70 m/s b) v = λf ⇒ λ = v/f = 16 cm c) Paverage = 2π2 mvr2f2 = 0.67 W.