A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the centerline of tube’s thickness, Am, and shear stress t. Torsional moment of resistance, T of the section would be

A closed thin walled tube has thickness, t, mean enclosed area within

1.	A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the centerline of tube’s thickness, Am, and shear stress t. Torsional moment of resistance, T of the section would be
A.	2τAmt
B.	τAmtok
C.	0.5τAmt
D.	4τAmt
Answer» B. τAmtok

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A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the centerline of tube’s thickness, Am, and shear stress t. Torsional moment of resistance, T of the section would be

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