Question
The moment of inertia of a cube of mass m and side a about one of its edges is equal to
BITSAT
Physics
Rotational Motion
2024
BITSAT 2024 (Memory Based Paper 3)
BITSAT Physics Question (2024) — Solution
Options
- A. 2 3 m a^2
- B. 4 3 m a^2
- C. 3 m a^2
- D. 8 3 m a^2
Answer
A. 2 3 m a^2
Step-by-step solution
From theorem of perpendicular axes, we have aligned I & =I_C+m ( a 2 )^2 \\ & = [ m a^2 12 + m a^2 12 ]+ m a^2 2 \\ & = 2 3 m a^2 aligned
Related: Physics — Rotational Motion · All PYQ Banks