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From a uniform circular disc of radius R and mass 9 M, a small disc of radius R/3 is removed as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of disc is:
  • a)
    4MR2
  • b)
  • c)
    10MR2
  • d)
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
From a uniform circular disc of radius R and mass 9 M, a small disc of...
Mass of disc = Volume x Density
9M = A x T x ρ (Area x thickness x density)

(i) Divided by (ii) 

Moment of inertia of complete disc about an axis passes through O.

Moment of inertia of cut off disc about an axis passes through O

So, moment of inertia of remaining disc = I1 -I2
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From a uniform circular disc of radius R and mass 9 M, a small disc of radius R/3isremoved as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of disc is:a)4MR2b)c)10MR2d)Correct answer is option 'A'. Can you explain this answer?
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From a uniform circular disc of radius R and mass 9 M, a small disc of radius R/3isremoved as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of disc is:a)4MR2b)c)10MR2d)Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about From a uniform circular disc of radius R and mass 9 M, a small disc of radius R/3isremoved as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of disc is:a)4MR2b)c)10MR2d)Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for From a uniform circular disc of radius R and mass 9 M, a small disc of radius R/3isremoved as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of disc is:a)4MR2b)c)10MR2d)Correct answer is option 'A'. Can you explain this answer?.
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