5 -{ 6tll mm diameter pulley, D, driven by a horii.-qi= rL ra.a-smits power through a solid sh4ft to a :ci.:: r: -ir :rm pitch circle diameter, C, which drives a ':".;ir-i !=;r. The pulley weighs L 500 N, to provide some $-*fuel edefi. The arrangement of the elements, the -ir =cscrs ssd tle components of the gear reagtions on :ie p'-n!,co. are icdrcated rn the sketch. Determine (a) the r€cessai-i' ;I;:-r Carneter using a shear stress of 30 MPa ,-ad a beaC:E lress of -10 MPa; and (b) the radial loads cn -\ ard B" [