Machine Design
The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given byWhere m = mass of belt per meter (kg/m)v = belt velocity (m/s)f = coefficient of frictiona = angle of wrap (radians)

P1 / P2 = e–ᶠα
P1 / P2 = eᶠα
(P1 - mv²)/ (P2 - mv²) = eᶠα
(P1 - mv²)/ (P2 - mv²) = e–ᶠα

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Machine Design
The creep in the belt is due to

Material of belt
Effect of temperature on belt
Unequal extensions in the belt due to tight and slack side tensions
Stresses beyond elastic limit of belt material

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