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The moment of inertia of a rod about an axis through its centre and perpendicular to it is  (where  is the mass and  is the length of the rod). The rod is bent in the middle so that the two halves makes an angular of . The same axis would be

a)

b)

c)

d)



Question ID - 53211 | SaraNextGen Top Answer

The moment of inertia of a rod about an axis through its centre and perpendicular to it is  (where  is the mass and  is the length of the rod). The rod is bent in the middle so that the two halves makes an angular of . The same axis would be

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Since, rod is bent at the middle, so each part of it will have same length  as shown.

Moment of inertia of each part through its one end

Hence, net moment of inertia through its middle point  is

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