Question

Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is
A.bh3/4
B.bh3/8
C. bh3/12
D.bh3/36

Answer 1

D. bh3/36 is the correct answer.

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Answer 2

The moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is bh3/36. (option D)

• The moment of inertia is defined as the sum of the product of the mass of each and every particle with its square of a distance from its axis of rotation.
• The S.I unit of moment of inertia is Kg $m^2$.
• Moment of inertia is also called angular or rotational inertia as it only acts on a specified axis of symmetry.
• It depends on axis of rotation as the definition says but it also depends on mass distribution along its axis.