Three identical spheres each of mass \( M \) are placed at the corners of a right angled triangl...

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Three identical spheres each of mass \( M \) are placed at the corners of a right angled triangle with mutually perpendicular sides equal to \( 3 \mathrm{~m} \) each. Taking point of intersection of mutually perpendicular sides as origin, the magnitude of position vector of centre of mass of thesystem will be \( \sqrt{x} \mathrm{~m} \). The value of \( x \) is
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