Shm question
In this question, why do we ignore work done by friction when applying the energy method(this is what I've seen in most solutions online) cuz when you displace the top rod by a distance x ,Work done by friction should be non zero right? ;
Also is it possible to do this without energy method, I tried but couldn't get the correct answer

10 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.First of all it is impossible to oscillate about a point in a cylindrical body
And friction here is static so no work done
What I got

what do you mean by rod also why is F restoration=K2Rtheta
isnt x=rdtheta
why the extra 2
we are taking from the base (the iar) as shown in diagram so we should take diameter which is 2r
Oh accha mb
this
@Havoxerr answer kya hai
