Practicing Success
The ratio of radius of gyration of a solid sphere of mass M and radius R about its own axis to the radius of gyration of the thin hollow sphere of same mass and radius about its axis is: |
5 : 2 3 : 5 5 : 3 2 : 5 |
3 : 5 |
$\text{Radius of gyration of solid sphere about its own axis is } = \sqrt{\frac{2}{5}}R$ $\text{Radius of gyration of hollow sphere about its own axis is } = \sqrt{\frac{2}{3}}R$ $\text{Required Ratio is } \sqrt{\frac{2}{5}} \sqrt{\frac{3}{2}} = \sqrt{\frac{3}{5}}$ All the options are wrong |