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Question: the radial and hoop stresses at any radius r for...

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The radial and hoop stresses at any radius, r, for a think dise with uniform thickness rotating at angular speed o rad/s is given by 8 where A and B are constants, μ is Poissons Ratio and ρ is bulk density of disk material. Determine the hoop stress at the inside radii of a thin steel dise of 0.3 m diameter, having a central hole of 0.1 cm diameter, if the disc is made to rotate at 5000 rpm. For steel, take μ-0.3 and ρ-7500 kg/m.
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