The principal stresses are 15.31 ksi (tension) and 7.31 ksi (compression). The maximum principal stress acts on a plane oriented $22.5^\circ$ counterclockwise from the original $x$-axis.
Are you struggling with the complex problems in your Mechanics of Materials course? Do you wish you had a comprehensive resource to help you understand the concepts and work through the exercises? The principal stresses are 15
Power transmission, angle of twist, statically indeterminate shafts, and torsion of non-circular cross-sections. Step-by-step integration for variable torque sections is clearly shown. angle of twist
: pinpoints exactly where a calculation went wrong. statically indeterminate shafts