d is made from two segments: $AB$ is steel and $BC$ is brass. It is fixed at its ends and subjected to a torque of $T=690N*m.$ The steel portion has a diameter of $30$ mm $.$

$st=75$GPa,$G_{br}=39$GPa

Part A

Determine the required diameter of the brass portion so the reactions at the walls will be the same.

Express your answer to three significant figures and include appropriate units.

d is made from two segments: $AB$ is steel and $BC$ is brass. It is fixed at its ends and subjected to a torque of $T=690N*m.$ The steel portion has a diameter of $30$ mm $.$

$st=75$GPa,$G_{br}=39$GPa

Part A

Determine the required diameter of the brass portion so the reactions at the walls will be the same.

Express your answer to three significant figures and include appropriate units.