Question 517: Centre of Mass and Rotational Motion

Question

Three thin rods, each of mass ' $M$ ' and length ' $L$ ' are placed along $\mathrm{X}, \mathrm{Y}$ and Z axes which are mutually perpendicular. One end of each rod is at origin. M. I. of the system about Z axis is

Accepted Answer

$$\begin{array}{ll} 
& \mathrm{I}=\mathrm{I}_1+\mathrm{I}_2+\mathrm{I}_3 \
	herefore & \mathrm{I}=\frac{\mathrm{ML}^2}{3}+\frac{\mathrm{ML}^2}{3}+0 \
	herefore & \mathrm{I}=\frac{2 \mathrm{ML}^2}{3}
\end{array}$$

Answer

$\frac{3 \mathrm{ML}^2}{4}$

Answer

$\frac{2 M^2}{5}$

Answer

$\frac{2 \mathrm{ML}^2}{3}$

Answer

$\frac{3 \mathrm{ML}^2}{5}$

Centre of Mass and Rotational Motion

Three thin rods, each of mass ' M ' and length ' L ' are placed along \mathrm{X}, \mathrm{Y} and Z axes which are mutually perpendicular. One end of each rod is at origin. M. I. of the system about Z axis is

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