Examsnet
Unrestricted Exams Practice
Home
Exams
Banking Entrance Exams
CUET Exam Papers
Defence Exams
Engineering Exams
Finance Entrance Exams
GATE Exam Practice
Insurance Exams
International Exams
JEE Exams
LAW Entrance Exams
MBA Entrance Exams
MCA Entrance Exams
Medical Entrance Exams
Other Entrance Exams
Police Exams
Public Service Commission (PSC)
RRB Entrance Exams
SSC Exams
State Govt Exams
Subjectwise Practice
Teacher Exams
SET Exams(State Eligibility Test)
UPSC Entrance Exams
Aptitude
Algebra and Higher Mathematics
Arithmetic
Commercial Mathematics
Data Based Mathematics
Geometry and Mensuration
Number System and Numeracy
Problem Solving
Board Exams
Andhra
Bihar
CBSE
Gujarat
Haryana
ICSE
Jammu and Kashmir
Karnataka
Kerala
Madhya Pradesh
Maharashtra
Odisha
Tamil Nadu
Telangana
Uttar Pradesh
English
Competitive English
CBSE
CBSE Question Papers
NCERT Books
NCERT Exemplar Books
NCERT Study Notes
CBSE Study Concepts
CBSE Class 10 Solutions
CBSE Class 12 Solutions
NCERT Text Book Class 11 Solutions
NCERT Text Book Class 12 Solutions
ICSE Class 10 Papers
Certifications
Technical
Cloud Tech Certifications
Security Tech Certifications
Management
IT Infrastructure
More
About
Contact Us
Our Apps
Privacy
+
-
Test Index
Rotational Motion
Show Para
Hide Para
Section:
Physics
Share question:
© examsnet.com
Question : 2
Total: 24
As shown in the figure, two thin coplanar circular discs
A
and
B
each of mass '
M
' and radius '
r
' are attached to form a rigid body. The moment of inertia of this system about an axis perpendicular to the plane of disc B and passing through its centre is
[AP EAPCET 24 May 2025 S1]
2
Mr
2
3
Mr
2
4
Mr
2
5
Mr
2
Validate
Solution:
Moment of inertia of disc
B
about given axis,
I
B
=
‌
1
2
M
r
2
Moment of inertia of disc
A
about given axis using parallel axes theorem is,
I
A
=
‌
1
2
M
r
2
+
M
â‹…
(
2
r
)
2
=
‌
9
2
M
r
2
∴
M
â‹…
I
of system about given axis is,
I
=
I
A
+
I
B
=
(
‌
9
2
+
‌
1
2
)
M
r
2
=
5
M
r
2
© examsnet.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Prev Question
Next Question
More Free Exams
AP and TS EAMCET Engineering Model Papers
AP EAPCET
AP EAPCET Engineering Previous Papers
BITSAT Exam Previous Papers
KVPY Exam Previous Papers
TG EAPCET
TG EAPCET Chapters wise Questions
VITEEE Previous Papers