InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
A body of mass `m` is acceleratad uniformaly from rest to a speed `v` in a time `T` . The instanseous power delivered to the body as a function of time is given byA. `(MV^2)/(T)`B. `(1)/(2)(MV^2)/(T^2)`C. `(MV^2)/(T^2)`D. `(1)/(2)(MV^2)/(T)` |
|
Answer» Correct Answer - D `V=0+aTimpliesa=(V)/(T)` `v=at`,`F=Ma=(MV)/(T)` The displacement in time `t` `S=(1)/(2)at^2=(1)/(2)xx(V)/(T)T^2=(VT)/(2)` `overlineP=(W)/(T)=(FS)/(T)=(MV)/(T).(VT)/(2).(1)/(T)=(1)/(2)(MV^2)/(T)` |
|