InterviewSolution
Saved Bookmarks
| 1. |
A lift is coming from `8th` floor and is just about to reach `4th` floor. Taking ground floor as origin and positive direction upwards for all quantities, which one of the following is correct ?A. `xlt0,vlt0,agt0`B. `xgt0,vlt0,alt0`C. `xgt0,vlt0,agt0`D. `xgt0,vgt0,agt0` |
|
Answer» Correct Answer - A As the lift is coming iin downward direction displacement will be negative we have to see whether the moton is accelerating or retarding we know that due to downwards motion displacement will be negative when the lift reaches 4th floor is about to stop hence, motion is retarding in nature hence, `xlt0,agt0`. As displacement is in negative direction, velocity will also be negative i.e., `Vlt0` This can be shown on the adjacent graph. |
|