Rotational Motion · Moment of inertia
A solid sphere of mass and radius is divided into two unequal parts. The smaller part having mass is converted into a sphere of radius and the larger part is converted into a circular disc of thickness and radius . If is moment of inertia of a sphere having radius about an axis through its centre and is the moment of inertia of a disc about its diameter, the ratio of their moment of inertia .
- (1)35
- (2)70
- (3)140
- (4)210
We corrected a printing error in the original paper
Source printed “mas”.
Video solution coming soon
We're animating every PYQ step by step. Subscribe to get them first.
See the full 4 Apr 2026, Shift 1 paper
More on Moment of inertia
- 21 Jan 2026, Shift 1 · Q23Two identical thin rods of mass M kg and length L m are connected as shown in figure. Moment of inertia of the combined rod system about…
- 22 Jan 2026, Shift 1 · Q1A solid sphere of mass 5 kg and radius 10 cm is kept in contact with another solid sphere of mass 10 kg and radius 20 cm. The moment of…
- 22 Jan 2026, Shift 1 · Q24A circular disc has radius R1 and thickness T1. Another circular disc made of the same material has radius R2 and thickness T2. If the…
- 23 Jan 2026, Shift 1 · Q8The moment of inertia of a square loop made of four uniform solid cylinders, each having radius R and length L (R < L) about an axis…