PRACTICE / Radius of gyration

An equivalent radius for a rod

A uniform thin rod has length 0.60 m and mass M. Its center-axis moment is ML²/12.

Find its radius of gyration about an axis perpendicular to the rod through one end.

1. A$0.60\ \mathrm m$
2. B$0.20\sqrt3\ \mathrm m$
3. C$0.30\ \mathrm m$
4. D$0.10\sqrt3\ \mathrm m$

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