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where T b is the belt tension (N), f is the coefficient of friction, L is the conveyer length in meter divided by two, g is the acceleration due to gravity (9.81 m/s 2), m i is the load of idlers within 1 m length of conveyer belt (kg), m b is the load of 1 m length conveyer belt (kg), m m is the load of the conveyed materials per meter length of conveyer belt (kg), δ …