Total moment of inertia of the system,
I+I1+I2+I3
I2=I3=32mr2+mr2=35mr2
I1=32mr2
∴I=2×53mr2+32mr2
I=312mr2=4mr2
NEET UG 2015 — Physics Mechanics
2015mcqeasy
Three identical spherical shells, each of mass m and radius r are placed as shown in the figure. Consider an axis XX′ which is touching the two shells and passing through the diameter of the third shell. The moment of inertia of the system consisting of these three spherical shells about XX′ axis is:
Official previous-year question
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Options
- A
511mr2
- B
3mr2
- C
516mr2
- D
4mr2
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