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Two discs of radius 2 cm and 1 cm, made of the same material are placed as shown . The center of mass from $O_1$ is:

$\begin {array} {1 1} (a)\;0.4\;cm \\ (b)\;1.5\;cm \\ (c)\;0.6\;cm \\ (d)\;0.8\;cm \end {array}$

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$x1= \large\frac{M \times 3}{5M}$
$\qquad=\large\frac{3}{5}$
$\qquad=0.6\;cm$
answered Nov 20, 2013 by meena.p
 

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