This project utilizes the Microsoft Excel Software to display the graphical representation of (profile) that shows the relationship between the ratio of belt tension and the lap angle. This work (experiment) was carried out in the mechanics laboratory to investigate the ratio of belt tensions when a rope passes over a flat pulley with a la angle of 180° and also to determine the coefficient of friction between the mild steel surface of the pulley and the cutting rope. Further investigation was also done on the variation in the ratio of belt tensions with; change of lap angles and also a change of groove angles. At the end of the investigation, it was discovered that; the ratio of the belt tensions gradually reduced over a constant lap angle of π in position on the wall plate. It was also verified that, the ratio of the belt tensions increases with variation in the lap and groove angles while the load, T, was kept constant on the slack side hanger.
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