A circular disc x of radius r is made from an iron plate of thickness t , and another disc y of radius 4r is made from an iron plate of thickness t/4 . then the relation between the moment of inertia i(x) and i(y) is : .........? (a) i(y) = 32 i(x) (b) i(y) = 16 i(x) (c) i(y) = i(x) (d) i(y) = 64 i(x)
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Answer: (d) i(y) = 64 i(x)
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