Adjoining diagram has three disc, inwhcih each has mass M and radius R. Find the moment of inertia of this system about axis xx'.

Explanation

Moment of inertia of the system
`I_("system")=2xxI_("upper")+I_("inner")`
`=2xx5/4MR^(2)+(MR^(2))/4`
`=5/2MR^(2)+(MR^(2))/4`
`=11/4MR^(2)`