SHM

can we use T=2pisqrt(I/mgl) here?
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@Gyro Gearloose
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hardcoreisdead
what is the given ans
vj25_
vj25_OP3w ago
id have answer key yet but on searching online this is what i get
vj25_
vj25_OP3w ago
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hardcoreisdead
T=2pisqrt(I/mgl) iss se kya aaya tha
vj25_
vj25_OP3w ago
2pisqrt(27r/10g)
hardcoreisdead
mera 2pisqrt(17r/9g) aa rha 4mass of small ring = mass of big ring com = (0,9r/10) moi of system about A = 17/2 MR^2 where M is mass of small ring u got same data? why is 2mass of small ring = mass of big ring if we consider same thickness d then M = rho pi r^2 d and M' = rho pi r^2 d /4
vj25_
vj25_OP3w ago
i was getting MI as 9mr^2/4 and com and l=5r/6
hardcoreisdead
considering negligible thickness i got correct ans
vj25_
vj25_OP3w ago
baat toh sahi hai but generally rings me thickness consider nahi karte even tho qn me dia
hardcoreisdead
but negligible thickness ka assumption
vj25_
vj25_OP3w ago
from formula?
hardcoreisdead
avg glorifire ques yep
vj25_
vj25_OP3w ago
lol I aur l kya aa rha hai?
hardcoreisdead
moi = 9mr^2/2 m = mass of small ring d= 5r/6
vj25_
vj25_OP3w ago
O yeah right i forgot to take mass of both rings in denominator thanks +solved @hardcoreisdead
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