A) ring, disc, sphere
B) sphere, disc, ring
C) disc, ring, sphere
D) sphere, ring, disc
Correct Answer: B
Solution :
Increasing order of moment of inertia sphere, disc and ring\[{{I}_{s}}<{{I}_{d}}<{{I}_{r}}\]. Moment of inertia of sphere is ininioiupi \[\therefore \]It will reach the bottom first. (because due to its least moment of inertia, it oppose the rotational motion minimum)
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