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1. The problem statement, all variables and given/known data

For a power transmission system, a solid steel shaft is required to transmit a torque of 2000 Nm. The limiting factor is that the twist of the shaft should not exceed 5 degrees for each metre of the shaft length. The shear modulus G is 75 GPa for this steel. What should be the minimum shaft diameter??

2. Relevant equations

The general bending formula

T/J=Tau/r=Gxtheta/L

3. The attempt at a solution

I tried to use the bending formula and come up with 14mm minimum diameter shaft

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# Homework Help: Torsion question can anyone help?

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