Afreshwater marsh is drained to the ocean through anautomatic
tide gate that is 4ft wide and 3ft high. the gate is heldby hinges
located along its top edge at a and bears on a sill at b. at a given
time, the water levels in the marsh and in the ocean are6ft and 9ft
respectively. determine the force exerted by the sillon the gate at
b and the hinge reaction at a.

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?