The 'y' coordinate of the center of mass of the system of three rods of length '2a' and two rods of length 'a' as shown in the figure is: (Assume all rods to be of uniform density)

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9a83

9a163

zero

8a3

answer is B.

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Detailed Solution

The y-coordinate of center of mass isycm=m1y1+m2y2+m3y3+m4y4+m5y5m1+m2+m3+m4+m5=2m32a+2m(0)+2m(0)+m34a+m34a8m=9a163

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