Questions
An equilateral triangle ABC is fabricated by three identical rods each of mass m and length l. Then the moment of inertia of the triangular frame about an axis passing through vertex A and perpendicular to the plane of the triangular frame is
detailed solution
Correct option is D
IA=IAB+IBC+IACNow AM=lsin60o=3l2∴ IA=13ml2+112ml2+m3l22+13ml2=23ml2+56ml2=32ml2Talk to our academic expert!
Similar Questions
The moment of inertia of a circular disc of radius 2 m and mass 2 kg, about an axis passing through its centre of mass is 2 kg – . Its moment of inertia about an axis parallel to this axis and passing through its edge (in Kg -) is
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