InterviewSolution
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InterviewSolution
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An isosceles triangular piece is cut a square plate of side `l`. The piece is one-fourth of the square and mass of the remaining plate is `M`. The moment of inertia of the plate about an axis passing through `O` and perpendicular to its plane is A. `(Ml^(2))/6`B. `(Ml^(2))/12`C. `(Ml^(2))/24`D. `(Ml^(2))/3` |
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Answer» Correct Answer - A Mass of each of the four parts `=M/3` Mass of the plane including the cut piece `=(4M)/3` Moment of inertia of the whole plate (including the cut piece ) about the said axis `=((4M)/3)(l^(2))/6` Now moment of inertia of the remaining portioin should be `3/4` of the above `=Ml^(2)//6` |
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