Questions
One solid sphere A and another hollow sphere B are of same mass and same outer radius. Their moments
of inertia about their diameters are respectively, IA and IB such that
a
IA=IB
b
IA>IB
c
IA
d
None of these
detailed solution
Correct option is C
Let same mass and same outer radii of solid sphere and hollow sphere be M and R, respectively. The moment of inertia of solid sphere A about its diameter,IA=25MR2 …(i)The moment of inertia of hollow sphere (spherical shell) Babout its diameter, IB=23MR2 …(ii)From Eqs. (i) and (ii), we getIATalk 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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