A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r

Question 1

A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. The relation between the moments of inertia IA and IB is

(a) IA > IB

(b) IA = IB

(c) IA < IB

(d) depends on the actual value of t and r

Question 2

Correct option: (c) IA < IB

Explanation:

Since moment of inertia I = mr2 , where m is the mass of body & r is distance of it from the fixed axis.

mass = density × volume

kratos · Answer 1 · 2020-01-09T01:49:54+0000

Correct option: (c) IA < IB

Explanation:

Since moment of inertia I = mr2 , where m is the mass of body & r is distance of it from the fixed axis.

mass = density × volume

A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r

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A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r

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