A uniform disk, a thin hoop, and a uniform sphere, all with the same mass and sa

Question

A uniform disk, a thin hoop, and a uniform sphere, all with the same mass and same outer radius, are each free to rotate about a fixed axis through its center. Assume the hoop is connected to the rotational axis by light spokes. With the objects starting from rest, identical forces are simultaneously applied to the rims, as shown. Rank the objects according to their angular acceleration, least to greatest.





1. disk, hoop, sphere

2. disk, sphere, hoop

3. hoop, sphere, disk

4. hoop, disk, shpere

5. sphere, disk, hoop

6. sphere, hoop, disk

Explanation / Answer

option number 4 , hoop, disc, sphere [because their Moment of Inertia are in decreasing order in this form]

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