how to solve

[rtb6y456546]

Hello sir
How to solve
a thin walled beam of constant thickness shown in the fig is subjected to a torque of 3.2kNm . of the shear modulus is 25Gpa, the angle of twist per unit length is rad/m
.................................................. >>400mm<<
. .
. 2mm >.<
. .
..................................................


.
.
.
.
. 100mm

 

[Deleted member 4993]

Hello sir
How to solve
a thin walled beam of constant thickness shown in the fig is subjected to a torque of 3.2kNm . of the shear modulus is 25Gpa, the angle of twist per unit length is rad/m
.................................................. >>400mm<<
. .
. 2mm >.<
. .
..................................................


.
.
.
.
. 100mm

What is the expression for polar moment of inertia of a thin-walled beam?

What is the expression for the angle on twist of a thin-wall beam ?