A solid shaft 100 mm. in diameter is to be replaced with a hollow shaft equally strong and made of the same material. The outside diameter of the hollow shaft is 127 mm. The allowable shearing stress...

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Extracted text: A solid shaft 100 mm. in diameter is to be replaced with a hollow shaft equally strong and made of the same material. The outside diameter of the hollow shaft is 127 mm. The allowable shearing stress is 41.40 MPa. Determine; (a) the inside diameter (mm.) of the hollow shaft. (b) the thickness (mm.) of the hollow shaft.