Questions
The moment of inertia of a hollow cubical box of mass M and side a about an axis passing through the centres of two opposite faces is equal to
detailed solution
Correct option is D
Taking mass of plate m Then MI of two plates through which axis is passing = m a26×2 = ma23M.I. of 4 plates having symmetrical position from the axis.= 4×[ma212+m(a2)2] = 4×[ma23]Total MI = 4 ma23+ma23 = 5ma23using m =M6 ⇒MI = 5 Ma218Talk 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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