Saved Bookmarks
| 1. |
Given structures are lying in vertical plane and are hinged at x. Every structure is made up of two identical rods with mass M & length L each. Initially all are at rest and released. Initially in every case, one of the rods of the structure is vertical and the other horizontal A. `{:(P,Q,R,S),(2,3,4,1):}`B. `{:(P,Q,R,S),(1,4,2,3):}`C. `{:(P,Q,R,S),(3,2,4,1):}`D. `{:(P,Q,R,S),(2,3,1,2):}` |
|
Answer» Correct Answer - D Initially, As the acceleration of COM is not vertical in all the cases so, hinge force can not be vertical for `(2),alpha_(x)=(pi)/(I)=(3mgL)/(2.2mL^(2))=(3g)/(4L)` When K.E. becomes maximum the COM of the structure is lowest. `K.E._(Max) =2Mg [3+sqrt(10)/(4)]L` Angle turned for `(1)` `(pi)/(2)+ tan_(-1) ((1)/(3))` Moment of inertia `B rarr(2ML_(2))/(3)` |
|