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Class 11 NEET Physics System of Particles and Rotational Motion
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© examsnet.com
Question : 39
Total: 109
Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis XX' which is touching to two shells and passing through diameter of third shell.
Moment of inertia of the system consisting of these three spherical shells about XX' axis is :-
[NEET 2015 C]
3
m
r
2
16
5
m
r
2
4
m
r
2
11
5
m
r
2
Validate
Solution:
👈: Video Solution
I
x
x
′
=
I
1
+
I
2
+
I
3
2
3
m
r
2
+
(
2
3
m
r
2
+
m
r
2
)
+
(
2
3
m
r
2
+
m
r
2
)
(Using parallel axis theorem)
⇒
I
x
x
′
=
2
m
r
2
+
2
m
r
2
=
4
m
r
2
© examsnet.com
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