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A circular disc D1 of mass M and radius R has two identical discs D2 and D3 of the same mass M and radius R attached rigidly at its opposite ends (see figure). The moment of inertia of the system about the axis OO', passing through the centre of D1, as shown in the figure, will be:

a.

3MR2

b.

 MR2

c.

MR2

d.

 MR2



Question ID - 50607 | SaraNextGen Top Answer

A circular disc D1 of mass M and radius R has two identical discs D2 and D3 of the same mass M and radius R attached rigidly at its opposite ends (see figure). The moment of inertia of the system about the axis OO', passing through the centre of D1, as shown in the figure, will be:

a.

3MR2

b.

 MR2

c.

MR2

d.

 MR2

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

I =  + 2

  =  +  +2

   = 3

127 votes


127