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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a
2ML23
b
ML24
c
ML25
d
ML26
answer is A.
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Detailed Solution
Imedian line =IA+IB+IC+ID=2ML212+2ML22=ML216+12=23ML2
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