Question
Fri November 25, 2011 By:

A jet of liquid of cross sectional area "a" strikes a wall making an angle with the wall. The water strikes with the wall with velocity "v" and rebounds elastically.If density of liquid be "p" the normal forces on the wall is....

Expert Reply
Mon November 28, 2011
inthe following case volume of water striking the wall per sec=av    (a=cross section of the cylinder,v=velocity of water ie length of cyl striking per sec.
but in this problem as water is making angle
,volume of water striking per sec=av sin?
mass striking /sec=avpsin?
as bouncing back, so momentum change /sec=force=2mv   ;m=mass v= vel
                                                                         =2av2 psin?
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