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Problem 3 A cast iron gear has the below parameters. Estimate the gear as a ring with the outside diameter equal to the base diameter. Predict the angular velocity, in RPM, at which the gear will fail due to breaking.
Inner radius, a =.225 m Base radius,c=.300m Depth =0.150m Density, p = 7200 kg/m3 Modulus of elasticity,E =148 GPa Poissons ratio.n=0.25 Ultimate strength, Sut = 428 MPa