NEET2018Physics-Rotational Motion
NEET 2018 Physics Moment of Inertia MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Three objects, A : (a solid sphere) B : (a thin circular disk) C : (a circular ring)
each have the same mass M and radius R. They all spin with the same angular speed ω about their own symmetry axes. The amounts of work (W) required to bring them to rest, would satisfy the relation
A
WC > WB > WA
B
WA > WB > WC
C
WB > WA > WC
D
WA > WC > WB
Correct Answer
Option B
Detailed Explanation
The moment of inertia is highest for the ring, then the disk, and lowest for the sphere. Therefore, more work is needed to stop the ring.
Found an issue with this question?