Difference between Rotation Inertia of Rod V.S Cylinder

  • #1

Main Question or Discussion Point

A rod and Cylinder with a same axis of rotation relative to its body have different rotational inertia equation. WHY?

Thanks in advanced.
 

Answers and Replies

  • #2
5
1
The rod is assumed to have negligible radius. It is assumed to be a straight line having a fixed mass. In case of a cylinder, it has a radius hence its moment of inertia is different from that of a rod.
 

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