A jet of liquid of density P and area A strikes a block and splits into two jets, as in Fig. P3.75. Assume the same velocity V for all three jets. The upper jet exits at an angle θ and area A. The lower jet is turned 90° downward. Neglecting fluid weight,
(a) derive a formula for the forces (Fx, Fy) required to support the block against fluid momentum changes.
(b) Show that Fy 0 only if α ≥0.5.
(c) Find the values of and for which both Fx and Fy are zero.