(USCS units) Consider an extruder in which the barrel diameter= 4.5 in and length = 11 ft. The extruder screw rotates at 60 rev/min; its channel depth 0.35 in and flight angle = 20°, The plastic melt has a shear viscosity = 125(10*) Ib-sec/in'. Determine (a) Qmun and pmax, (b) the shape factor for a circular die opening with diameter = 0.312 in and length = 0.75 in, and (c) the values of Q and p at the operating point.

Fig: 1