Question

please need a explaitn!!! #hppy diawli​

Answer 1

Explanation:

option( 1) is correct.

Answer 2

Answer:

c) (3MR²)/2

Explanation:

MOI for a ring is MR² through the axis OO'( all the mass is at R distance from COM)

since a ring can lie entirely in xy plane , using perpendicular axis. theorem

Ix+Iy=Iz. where Iz=MR² you get Ix(which is about DD') as MR²/2 (Ix=Iy as it's symmetric figure)

shift the axis by R distance and Ipq=Ix+MR²

which is 3MR²/2

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