Physics, 04.02.2021 09:20 JOEREACH

1. A centrifugal friction clutch has a dziving member consisting of a spider carrying four shoes which are kept honi contact with the clutch case by mcats of flat springs until increase of centrifugal force overcomes the resistance of the springs and the power is transmitted by friction between the shoes and the case Determine the necessary mass of cach shoe if 22.5 kW is to be transmitted at 750 rpm with engagement beginning at 75% of the running speed. The inside diameter of the drum is 300 min and the radial distance of the centre of gravity of cach shoe from the shaft axis is 125 mm. Assume 0.25

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