Questions
If the moment of inertia of a disc about al axis tangentially and parallel to its surface be I, then what will be the moment of inertia about the axis tangential but Perpendicular to the surface.
detailed solution
Correct option is A
According to the theorem of parallel axes, the moment of inertia of the disc about an axis tangentially and parallel to the surface is given byI=I11=MR24+MR2=54MR2The moment of inertia of the disc about an axis tangential but perpendicular to the surface is given byI′=I⊥=MR22+MR2=32MR2=6554MR2=65ITalk to our academic expert!
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Two discs have mass ratio 1 : 2 and diameter ratio 2 : 1, then find the ratio of their moments of inertia.
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