Rotation 1 Question 14
17. From a circular disc of radius and mass , a small disc of radius is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through is
(2005)
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 17. (a)
Solution:
or
Here,
Substituting in Eq. (i), we have