The sector rotates with = 8 rad/s and = 16 rad/s2 about a fixed axis through point B. Simultaneously, the particle A moves in the curved slot with constant speed u = 4 m/s relative to the sector. Determine the absolute velocity and acceleration of particle A, and identify the Coriolis acceleration. The distances r1 = 855 mm and r2 = 305 mm.

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?