Question

Two masses each of mass `M` are attached to the end of a rigid massless rod of length `L`. The moment of interia of the system about an axis passing centre of mass and perpendicular to its length is.
A. `(ML^2)/(4)`
B. `(ML^2)/(2)`
C. `ML^2`
D. `2 ML^2`

Answer 1

Correct Answer - B
(b) The moment of interia of the system about the given axis is
`I = M((L)/(2))^2 + M((L)/(2))^2 =(ML^2)/(4) + (ML^2)/(4) = (ML^2)/(2)`.
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