Question

Three identical spherical shells, each of mass m and
radius r are placed as shown in figure. Consider an
axis XX' which is touching to two shells and passing
through diameter of third shell. Moment of inertia
of the system consisting of these three spherical
shells about XX' axis is :-​

Answer 1

Answer:

Explanation

l=l1+l2+l3

L1=2/3mr^2+mr^2

=5/3mr^2 ×2

=mr^2 (2/3+10/3

L=4mr^2