Aerospace Engineering > GATE 2019 > Torsion
A solid circular shaft is designed to transmit a torque T with a factor of safety of 2. It is proposed to replace the solid shaft by a hollow shaft of the same material and identical outer radius. If the inner radius is half the outer radius, the factor of safety for the hollow shaft is _______ (round off to 1 decimal place).
Correct : 1.8 to 1.9
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