Ques 2. (20 Marks) A steady, incompressible, inviscid, two-dimensional jet of fluid (density $\rho$)
with breadth $h$, width $w$ (into the page), and velocity $u$ impinges on a plate at an angle $\alpha$ as
shown in the figure. The vertical force $\textbf{F}$ required to hold the plate stationary acts at a distance
$L$ from the origin O. Assuming uniform velocity profile and neglecting gravitational forces,
(a) (12 marks) determine the total force $\textbf{F}$, and the breadths $a$ and $b$ of the two branches.
(b) (8 Marks) determine the distance $L$ along the plate from the point O.
$h$
$u$
$a$
$b$
$u$
$o$
$u$
$L$
$\textbf{F}$
$\alpha$
Figure 2: Schematic for Ques. 2
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