Questions
Four identical rods are joined end to end to form a square. The mass of each rod is M. The moment of inertia of the system about one of the diagonals is
detailed solution
Correct option is A
The moment of inertia about CM system perpendicular to plane is Iz=4ml212+ml22=43Ml2From perpendicular axis theorem,43Ml2=Id1+Id2 due to symmetry , Id1=Id2=Id⇒Id=23Ml2Talk to our academic expert!
Similar Questions
A circular portion of diameter R is cut out from a uniform circular disc of mass M and radius R as shown in Fig. The moment of inertia of the remaining (shaded) portion of the disc about an axis passing through the centre O of the disc and perpendicular to its plane is
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