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JEE Mains Model Paper 23
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© examsnet.com
Question : 2
Total: 90
A circular plate of radius
R
2
is cut from one edge of a thin circular plate of radius R of mass M. Themoment of inertia of the remaining portion about an axis passing through centre and perpendicularto plane of the original plate is
11
24
M
R
2
7
12
M
R
2
13
32
M
R
2
5
7
M
R
2
Validate
Solution:
Use parallel axes theorem
I
rem
=
I
tot
-
I
removed
,
I
rem
=
M
R
2
2
-
[
M
R
2
32
+
M
R
2
16
]
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