A circular disc is to be made by using iron and aluminium so that it acquire moment of inertia about the…

A circular disc is to be made by using iron and aluminium so that it acquire moment of inertia about the geometrical axis. It is possible with:
  1. aluminium at interior and iron surrounding it
  2. iron at interior and aluminium surrounding it
  3. using iron and aluminium lives in an alternate order
  4. sheet of iron is used at the external surface and aluminium sheet as internal layers

Solution

Density of Iron is more than Aluminum.

Asked in: NEET 2002

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