Ahorizontal free jet of water with speed v and mass flow rate m dot is turned through an angle theta measured from the horizontal. show mathematically which angle will produce the maximum and which angle will produce the minimum horizontal force required to hold the vane stationary. prove which is max and which is min.

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?