Saved Bookmarks
| 1. |
About which axis the M.I. is minimum for a rigid body? |
|
Answer» According to parallel axis theorem, M.I. of an axis (A’B’), parallel to an axis AB passing through centre of mass is given by IA’B’ = M.I.+ MR2 where M is mass of body and R is the perpendicular distance between AB and A’B’ ) ∴ IA’B’ > IAB ∴ to minimize I, R = 0 Hence M.I. of a body is minimum about an axis passing through the centre of mass. |
|