Question

find the moment of inertia of a cylinder of mass m radius r and length l about an axis passing through its centre and perpendicular to its length

Answer 1

A cylinder has same MI as that of a disk

Very easy and convincing to under stand that a solid cylinder is a streched disk

As MI of disk = 1/2m$r^{2}$

MI of Solid cylinder=MI of disk

MI of Hollow cylinder=MI of Ring

Thank you

Answer 2

Answer:

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