Saved Bookmarks
| 1. |
A section of fixed smooth circular track of radius `R` in vertical plane is shown in the figure. A block is released from position `A` and leaves the track at `B` The radius of curvature of its trajectory just after it leaves the track `B` is ? A. RB. R/4C. R/2D. none of these |
|
Answer» Correct Answer - B `w_(g)=mgR(cos37^(@)-cos53^(@))=1/2 mv^(2)` `rArr v^(2) =(2gR)/5` `R_(c)=(v^(2))/(a_(N))=(v^(2))/(g cos 37^(@)) =(2gR//5)/(4g//5) =R/2` |
|