2- A 600 mm diameter pulley driven by a horizontal belt transmits power through a solid shaft to a 262 mm diameter pinion, which drives a mating gear. The pulley weighs 1200 N. The arrangement of elements, the belt tensions, and the components of the gear reactions on the pinion are indicated in Fig.5. Determine the necessary shaft diameter using K₁ =2.0, K₁ = 1.5 and the allowable torsional stress = 40 MN/m². 1500 N 3000 N 5000 N 250 500 200 8400 N 1200 N Fig.5