System of Particles and Rotational Motion - Result Question 62
65. The moment of inertia of a uniform circular disc of radius
[2006, 2005]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 65. (c)
Solution:
- (c) M.I. of a uniform circular disc of radius ’
(d) As we know that,
Rotational energy
Linear kinetic energy
69 .
(b) Moment of inertia
So, whole of aluminium is kept in the core and the iron at the outer rim of the disc.
