Question

what is filing and loading of a tuning forrk

Answer 1

A tuning fork C produces 8 beats per second with a fork D of frequency 340 Hz. When the prongs of C are filed a little, the beats per second decrease to 4 . Find the frequency of C before filing .
Solution:
Consider case – 1 before filing the prongs
Frequency of Tuning fork D = n D = 340 Hz
Number of beats heard = 8 per second
∴ Frequency of Tuning fork C before filing the prongs = n C= ( 340 ± 8 ) Hz
∴ Frequency of Tuning fork C before filing the prongs = 332 Hz or 348 Hz
Consider case – 2 when prongs of C are filed
Number of beats heard = 4 per second
∴ Frequency of Tuning fork C after filing the prongs = n C = ( 340 ± 4 ) Hz
∴ Frequency of Tuning fork C after filing the prongs = 336 Hz or 344 Hz
When prongs of tuning fork are filed the frequency of tuning fork increases
If frequency of fork C is 348 Hz , on filing its frequency should be more than 348 Hz
It means it can not take lower values of 344 Hz and 336 Hz and hence the frequency of C cannot be 348 Hz
Hence frequency of tuning fork C should be 332 Hz , which satisfies the two cases
and it increases to 336 Hz after filing the prongs
Ans : Frequency of fork C is 332 H

Answer 2

answers.....of filling & loading of a tuning fork..