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

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.