Four identical rods (each of length I) are joined end to end to form a square as shown in fig. The mass of each rod is M. The moment of inertia of the square about the median line is

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2ML23

ML24

ML25

ML26

answer is A.

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Detailed Solution

Imedian line =IA+IB+IC+ID=2ML212+2ML22=ML216+12=23ML2

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