A belt of density of 1500 kg/m 3 and cross-sectional area 400 x 10 -6 m 2 transmits 120 kW power at 1800 rev/min through a pulley of diameter 1.6 m. The angle of lap between the belt and the pulley is 240 0 and μ = 0.2. Determine: 3.1 The tensions and the maximum stress in the belt. (10) 3.2 The tensions if a grooved pulley with a groove angle of 50 0 . (
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