The inner radius of a bone is half the outer radius

Reference no: EM13545794

The inner radius of a bone is half the outer radius. What would the outer radius of the bone be if, for a given torque, it were to twist through the same angle as a steel rod of the same length with a 1-cm radius? (the polar moment of inertia of a hollow cylinder is pi(a^4-b^4)/2, where a and b are the outer and inner radii, respectively.)

Reference no: EM13545794

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