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consider that rod is bent such that half part is on +x axis & other half is on +y axis ...
mass of each half is m/2 & length is l/2
center of mass of each section will be at mid point of that section so
center of mass of rod in x axis will be at (l/4,0)
center of mass of rod at y axis will be at (0,l/4)
now , xcom =[ m1x1 + m2x2]/[m1+m2] =[ (m/2)(l/4) + 0]/[m/2 + m/2]
= l/8
ycom = [m1y1 + m2y2]/[m1+m2] = [(m/2)l/4 + 0]/[m/2+m/2] = l/8
rcom = xcom (i) + ycom (j)
=l/8 i + l/8 j
magnitude = l/4root2 ( from the corner)
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