39that answer was too obvious yaar shreyan.i want some physical situation without any use of these parallel axis theorem.
generally they say that moment of inertia cannot be more than MR*2.but there is a case where it can be greater than MR*2.can anyone describe one such case? nishant bhai please dont answer this.
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6 Answers
1moment of inertia of a ring about an axis parallel to axis passing through centre and through the circumference:
using parallel axis theorem,
Ixx' = Ic + Md2
Ixx' = Mr2 + Mr2 = 2Mr2
thus, moment of inertia is more than MR2
(is this what u actually asked for???)
39
1u can see the moment of inertia of a ring alontg its srim von vertical axis
62Finally Am posting the answer cos no one else did :) (Sorry b555.. and sorry i dont know ur name either :D)
This is not a very easy visualisation....
take a Sphere of variable density.. very high density at the center and lower density as you go out.. Find the I of this..
Or for that matter an Atom.. The Protons and Neutrons at the center and electrons aroudn it..