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Class 11 NEET Physics System of Particles and Rotational Motion
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© examsnet.com
Question : 30
Total: 109
A light rod of length l has two masses
m
1
and
m
2
attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is :
[NEET 2016 P2]
√
m
1
m
2
l
2
m
1
m
2
m
1
+
m
2
l
2
m
1
m
2
m
1
+
m
2
l
2
(
m
1
+
m
2
)
l
2
Validate
Solution:
I=
m
1
(
m
2
l
m
1
+
m
2
)
2
+
m
2
(
m
1
l
m
1
+
m
2
)
2
=
m
1
m
2
l
2
(
m
1
+
m
2
)
2
[
m
1
+
m
2
]
=
m
1
m
2
m
1
+
m
2
l
2
© examsnet.com
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