Question

Im looking for help on number 2! Thanks

1.0 Use X 2L/m and fo v/Am m (2) to solve these problems. For strings, the relationship fm 2V is also true. mn 2L 0.5! (w) 0.0 WWW -0.51 1. What is (a) the wavelength and (2) the mode of the standing wave in the figure of a vibrating string below? -1.01 -1.5 2 3 4 5 < (m) (w) 3. A string has a linear density of u 2.0 x 10-3 kg/m and is strung with a tension of 10 N. The string is 2.5 m long. What is the frequency re- quired to achieve the 2nd vibrational mode? 4. If a violin string has a length of 30 cm and emits a note (fundamental mode) at 500 Hz when plucked. What is the wave speed along the string? 0 16.4 Standing Sound Waves 2 3 4 (m) 2. The standing wave below is created on a string. The string weighs 0.001 kg and has a length of 5.0 m and is strung at 20 N. What is the frequency of the standing wave? 1. A giant alphorn has a length of 3.6 m. Assuming its an open-open pipe and that sound travels at 343 m/s, what is the fundamental wavelength and frequency which an alphorn would produce? 26

Answer 1

Soll frequency fa | 2e JM I īs 20N. 1 Given: 2=5m t = 0.001 = 0.0002 Kylm. 5 fa 285 20 0.0002 = 31.6 Hz