Q109 / 150 · MHT CET 2011 · Physics

A circular disc is to be made by using iron and aluminium, so that it aquires momentum of inertia about its geometrical axis. It is possible with

  • A
    iron and aluminium layers in alternate order
  • Correct answer
    B
    aluminium at interior and iron surrounding it
  • C
    iron at interior and aluminium surrounding it
  • D
    Either (a) or (c)

Solution

By doing so the distribution of mass can be made away from the axis of rotation.

Hence, the correct answer is option: 'B'.

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