(20%) Problem 5: A frequency between the tuning fork and the puitar string and b
ID: 3278398 • Letter: #
Question
(20%) Problem 5: A frequency between the tuning fork and the puitar string and between the tuning fork and the trumpet for this mote of rH detailed view in the guitar string and wer from the options below Pete taal 100% Completed The frequency of the note emitsed by the guitar sting was originaly less tham that esitted by the tuning fork The frrqumcy of the note emitted by the guitar string was originally equal to that emited by the tuning fork 3 Partial Partsal i y.. Part (b) Find the orignal tegency of this notefo m Hz on the guitar string = 13% Part (c) Determine therato r s tuned T·to elminate the beat frequency r between de tetason in the gutar string before t.ang Tand the tensson an the gutar string once 13% Part (d) If the orignal tension Tis 100 N, ubat must be the new tetuon 'm Newtons? l 1% Part (e) The musacian mereases the length of air cohen in the trumpet and she es that the beat frequency increases. Choose the 8 9Explanation / Answer
a]first option is correct.
increasing tension increases speed of string wave which increases string frequency. Beat increases means frequency of string was larger than tuning fork.
b] original frequency = 240+3 = 243 Hz
c] Here f'/f = 240/243, so v'/v = 240/243
T'/T = (v'/v)^2 = (240/243)^2 = 0.975
d] T' = 0.975*100 = 97.5 N
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