InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
The resistance force arising due to pressure difference at the front and rear sides of a body in a fluid stream depends upon the density of the fluid, the velocity of flow and the maximum area of cross-section perpendicular to the flow. Show that the force varies as the square of the velocity. |
|
Answer» Correct Answer - `Fmuv^(2)` `Fprop (rho)^(a) (v)^(b)(A)^(c)` `k(rho)^(a)(v)^(b)(A)^(c) " " ]k rarr "Proposnality constant"]` `rArr MLT^(-2)=k(ML^(-3))^(a)(LT^(-1))^(b)(L^(2))^(c)` `rArr a=1,-3a-b+2c=0,rArr-b+2c=3` & `-b=-2 rArrb=2` `rArr F=(rho)(V)^(2)(A)^(1)` `rArrF prop V^(2)` |
|