The v-belt is driven at 600 r.p.m. by 15 kW, 1750 r.p.m. electric motor. The center distance is twice the diameter of the larger pulley. The density of the belt material = 1500 kg/m³; maximum allowable stress = 4 MPa; μ₁ = 0.5 (motor pulley); μ₂ = 0.4 (blower pulley); peripheral velocity of the belt = 20 m/s.