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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?

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?

Grade:10

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
6 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.

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