Time allocation: Rotational motion questions are formula-heavy but structured. Allocate 90–120 seconds per question. If a question requires two or more theorem applications (e.g., perpendicular axis then parallel axis), it is a 2-mark difficulty — do not spend more than 2.5 minutes.

First-pass checklist for any MI question:

1. Identify the body (disc, sphere, rod, ring).
2. Identify the axis (through CM? parallel to a CM axis? perpendicular to plane?).
3. Select theorem: parallel axis (any body) or perpendicular axis (flat bodies only).
4. Write $I_{cm}$ from memory, apply theorem, check dimensions [M $L^{2}$ $T^{0}$].

First-pass checklist for rolling questions:

1. Identify body type → look up $K^2/R^2$.
2. Use $a = g\sin\theta/(1 + K^2/R^2)$ or energy $mgh = \frac{1}{2}mv^2(1 + K^2/R^2)$.
3. For race questions: smallest $K^2/R^2$ wins — no arithmetic needed.

Elimination strategy for MCQs:

• If the answer has dimensions of [M $L^{2}$ $T^{0}$], it is a moment of inertia.
• If options differ only by a coefficient (e.g., 2/5 vs 2/3 vs 7/5), it's a standard MI question — double-check which axis is specified.
• For angular momentum conservation, eliminate options that change $L$ (they would require external torque).

High-frequency NEET targets (practice these first):

1. I of disc about tangent in its plane: $5MR^2/4$.
2. I of solid sphere about tangent: $7MR^2/5$.
3. Rolling race order on incline.
4. Skater pulls arms — find new angular velocity and change in KE.
5. CM position of semicircular ring vs semicircular disc.

Dimensional analysis shortcut: If a formula gives [M $L^{2}$ $T^{-2}$], it is energy or torque. If [M $L^{2}$ $T^{-1}$], it is angular momentum. Use this to verify before marking.