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AIEEE 2004 Physics Solved Paper
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© examsnet.com
Question : 16
Total: 78
One solid sphere
A
and another hollow sphere
B
are of same mass and same outer radii. Their moment of inertia about their diameters are respectively
I
A
and
I
B
such that
I
A
<
I
B
I
A
>
I
B
I
A
=
I
B
I
A
I
B
=
d
A
d
B
where
d
A
and
d
B
are their densities.
Validate
Solution:
For solid sphere the moment of inertia of
A
about its diameter
I
A
=
2
5
M
R
2
.
The moment of inertia of a hollow sphere
B
about its diameter
I
B
=
2
3
M
R
2
∴
I
A
<
I
B
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