A composite disc is to be made using equal masses of aluminium and iron so that it has as high a mom...........

General Science (Easy) Physics

A composite disc is to be made using equal masses of aluminium and iron so that it has as high a moment of inertia as possible. This is possible when

the surfaces of the disc are made of iron with aluminium inside

the whole of aluminium is kept in the core and the iron at the outer rim of the disc

the whole of the iron is kept in the core and the aluminium at the outer rim of the disc

the whole disc is made with thin alternate sheets of iron and aluminium

The whole of aluminium is kept in the core and the iron at the outer rim of the disc

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