Rotational Motion Question 197

Question: Four point masses, each of value m, are placed at the comers of a square ABCD of side .The moment of inertia of this system about an axis passing through A and parallel to BD is

Options:

A) 2m2

B) 3m2

C) 3m2

D) m2

Show Answer

Answer:

Correct Answer: C

Solution:

[c]

Inn=M.I

due to the point mass at B+M.I

due to the point mass at D+M.I

due to the point mass at C.=2×m(2)2+m(2)2=m2+2m2=3m2



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