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Question: Answered & Verified by Expert
Consider a uniform disc in the x-y plane free to rotate about an axis parallel to the Z-axis as shown (passing through the centre). A force of 4N applied at 4,3 along y-axis, as shown produces an angular acceleration of 2 s-2 . Locate the centre of mass of the disc if the mass of the disc is 2 kg.

PhysicsRotational MotionJEE Main
Options:
  • A (1, 3)
  • B (2, 3)
  • C (0, 3)
  • D (4, 3)
Solution:
2700 Upvotes Verified Answer
The correct answer is: (2, 3)
As τ=Iα

4R=2R22 2

     R=2 m

Thus, COM is at (2, 3)

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