14 Replies
@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Where am I going wrong
f=1/2l*sqrt(T.l/m) since T=k.l, we have f=0.5sqrt(k/m), so it is independant of change in length
Therefore, ratio is 1.
Ans is 1.4 tho
Also it's mentioned that tension is proportional to elongation , I ignored that fact. thus the discrepancy in answer ??
Ah me so blind🤦♂️ . Tension is proportional to elongation and not length
So, place T=kΔl and not l
Just place the values and you get 1.4 ig.
if it werent mentioned , would my ans be correct
The tension portion?
It would be better to use mass of the wire as it remains constant
Ah sorry, it would be correct yes.
In fact, your solution is correct. They asked the ratio of frequencies which is 1/0.72=1.4 (inverse ratio of wavelengths)
meine bhi toh ratio of frequencies hi nikala hai
n1/n2
how are they related??
oh wait , soln mein n2/n1 hi hai which makes sense
n2/n1= 1.4
n1/n2=0.72
but why would they find n2/n1 and not n1/n2
https://www.toppr.com/ask/question/1853499/
Yep they did find n2/n1 ig
any set logic or smthing?
anyone../
lemme see
this seems ok
Maybe solution galat hai
f = V/2L is the universal formula for a string joint at two ends and fundamental mode
V = √T/u can depend ig
nah ans key mein mere ans ka just reciprocal hai
+solved @Dexter
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