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Question: Answered & Verified by Expert
A thin circular disk is in the xy plane as shown in the figure. The ratio of its moment of inertia about z and z' axes will be:
PhysicsRotational MotionJEE MainJEE Main 2018 (16 Apr Online)
Options:
  • A 1 :4
  • B 1:5
  • C 1:3
  • D 1:2
Solution:
1204 Upvotes Verified Answer
The correct answer is: 1:3
IZ= mR22

(by parallel axis theorem)

Iz′=32mR2

IZIz′=13

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