InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
A block of mass`2` kg is from to move along the x - axis it is at rest and from `1 = 0` onwards it is subjeted to a time - depended force `F(i) ` in the `x` diretion . The force `F(1) ` varies with `1` as shown in the figure . The kinetic of the block after `4.5` second is A. `4.50 J`B. `7.50 J`C. `5.06 J`D. `14.06 J` |
|
Answer» Correct Answer - C If `u` is the final velocity, then change in momemtume `=` impulse `=` area enclosed by graph with time axis `2(upsilon-0)=(4xx3)/(2)-(1)/(2)xx(3)/(2)xx2=4.5` `:. upsilon=2.25 m//s` `KE=(1)/(2)m upsilon^(2)=(1)/(2)xx2xx(2.25)^(2)=5.06J` |
|