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A 20 mm diameter steel bar is to be used as a torsion

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Reference no: EM13644565

A 20 mm diameter steel bar is to be used as a torsion spring. If the torsional stress in the bar is not to exceed 100 MPa when one end is twisted through an angle of 15degree, what must be the length of the bar?

Reference no: EM13644565

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