m = Mass attached to shafts,
r = Distance of CG from axis of rotation.
Consider mass ‘m’ is attached to rotating shaft at a radius are then the centrifugal force exerted by mass ‘M’ on the shaft is
Fc = Mw2R Where,
W = Angular velocity of shaft
R = Distance of CG from axis of rotation
M = Mass attached to shaft.
Power transmission in belt drive depends on angle of lap and frictional grip between belt and pulley. As slack side is at upper side angle of lap and grip increases.