The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod, is 2400 g cm$^2$. The length of the 400 g rod is nearly:

Question

Dr. Abubacker · Accepted Answer

[Solution by Claude - not from source] $I=\frac{ML^2}{12}\Rightarrow L^2=\frac{12	imes2400}{400}=72\Rightarrow L\approx8.5$ cm. Answer (3).

Q. The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod, is 2400 g cm$^2$. The length of the 400 g rod is nearly:

Explanation

Reviewed by Dr. Abubacker

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