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There is a solid cylinder of radius R and mass M; now we take a disc of the same mass and same radius to compare them; Now a line is passing through the diameter of that disc; Ratio of the moment of inertia in between the solid cylinder and the disc about its diameter is?

Option: 1


Option: 2


Option: 3



Option: 4


Answers (1)


The moment of Inertia of the cylinder is  =   \frac{1}{2}MR^{2}

And The moment of inertia of a disc about the line passing through its diameter is            \frac{1}{4}MR^{2}

Ration Between Moment of inertias =   \frac{\frac{1}{2}MR^{2}}{\frac{1}{4}MR^{2}}=2

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