Of the following objects (all same mass and radius ), which has the <strong>largest</strong> moment of inertia about its symmetry axis?
- Acheck_circle
Thin hoop / ring:
- B
Solid disk/cylinder:
- C
Solid sphere:
- D
Thin rod about its center, length :
Explanation
The hoop concentrates all mass at the maximum distance from the axis, giving the largest .