Saved Bookmarks
| 1. |
Two thin rods of same length `l` but of different uniform mass per unit length `mu_(1)` and `mu_(2)` respectively are joined together. The system is rotated on smooth horizontal plane as shown in figure. The tension at the joint will be A. `3/2 mu_(2)l^(2)omega^(2)`B. `3/2(mu_(1)+mu_(2))l^(2)omega^(2)`C. `3/2 mu_(1)l^(2)omega^(2)`D. `1/2mu_(1)l^(2)omega^(2)` |
|
Answer» Correct Answer - A The tension at joint is due to force exerted by the root of linear density `mu_(2)`. So `F=int_(l)^(2l) mu_(2) dxomega^(2)x=(3mu_(2) omega^(2)l^(2))/2` |
|