Ordinary cotton thread, 200 cm of which weighs 1 g, is used in Melde experiment. It is attached at one end to a vibrator of frequency 100 Hz and at the other to a pan weighing 6 g. What length of the

Question

Ordinary cotton thread, 200 cm of which weighs 1 g, is used in Melde experiment. It is attached at one end to a vibrator of frequency 100 Hz and at the other to a pan weighing 6 g. What length of the string will vibrate in 4 loops in the longitudinal arrangement if a 10 g weight is put on the pan? (answer in m ).

TestHub · Accepted Answer

μ = 0.001/2 = 5 × 1 0 − 4 kg/m, T = 0.016 × 9.8 = 0.157 N, v = T / μ ​ = 17.7 m/s. In the longitudinal arrangement the string vibrates at half the fork frequency, 50 Hz, so λ = 0.354 m. 4 loops: L = 4 λ /2 = 0.708 m.

Physics - Wave on String Question with Solution | TestHub

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