A direct rope haulage pulls 8 tubs loaded with coal through an incline of length 500 m having an inclination of 1 in 6. Consider the following additional data.<br>Capacity of tub = 1.0 tonne.<br>Tare weight of tub = 500 kg<br>Hauling speed = 9 km per hour<br>Coefficient of friction between wheel and rail = $$\frac{1}{{60}}$$<br>Coefficient of friction between rope and drum = $$\frac{1}{{10}}$$<br>Mass of rope per meter = 1.5 kg<br>The minimum power required to haul the tubs in kW is

Correct Answer: 58.86