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A circular disc is to be made by using iron aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It can be obtained with
  • a)
    iron and aluminium layers in alternate order
  • b)
    aluminium at interior and iron surrounding it
  • c)
    iron at interior and almuminium surrouning it
  • d)
    either '1' or '3'
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A circular disc is to be made by using iron aluminium, so that it acqu...
A circular disc may be divided into a large number of circular rings. Moment of inertia of the disc will be the summation of tire moments of inertia of these rings about the geometrical axis. Now, moment of inertia of a circular ring about its geometrical axis is MR2, where M is the mass and R is the radius of the ring.

• Since the density (mass per unit volume) for iron is more than that of aluminium, the proposed rings made of iron should be placed at a higher radius to get more value of MR2. Hence to get maximum moment of inertia for the circular disc, aluminium should be placed at interior and iron at the outside.
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A circular disc is to be made by using iron aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It can be obtained witha)iron and aluminium layers in alternate orderb)aluminium at interior and iron surrounding itc)iron at interior and almuminium surrouning itd)either '1' or '3'Correct answer is option 'B'. Can you explain this answer?
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A circular disc is to be made by using iron aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It can be obtained witha)iron and aluminium layers in alternate orderb)aluminium at interior and iron surrounding itc)iron at interior and almuminium surrouning itd)either '1' or '3'Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A circular disc is to be made by using iron aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It can be obtained witha)iron and aluminium layers in alternate orderb)aluminium at interior and iron surrounding itc)iron at interior and almuminium surrouning itd)either '1' or '3'Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A circular disc is to be made by using iron aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It can be obtained witha)iron and aluminium layers in alternate orderb)aluminium at interior and iron surrounding itc)iron at interior and almuminium surrouning itd)either '1' or '3'Correct answer is option 'B'. Can you explain this answer?.
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